chore(deps): update dependency system.text.json to 9.0.8

[thomhurst]

This PR contains the following updates:

Package	Type	Update	Change
System.Text.Json (source)	nuget	patch	9.0.7 -> 9.0.8

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Release Notes

dotnet/runtime (System.Text.Json)

v9.0.8: .NET 9.0.8

Release

What's Changed

• [automated] Merge branch 'release/9.0' => 'release/9.0-staging' by @​github-actions[bot] inhttps://github.com/dotnet/runtime/pull/1165144
• [release/9.0] Disable all MT tests on CI by @​ilonatommy in https://github.com/dotnet/runtime/pull/116747
• [9.0] Revert squash commit and pulls release/9.0 again by @​jozkee in https://github.com/dotnet/runtime/pull/116764
• [release/9.0-staging] Backport "Dispose Xunit ToolCommand" by @​ilonatommy in https://github.com/dotnet/runtime/pull/116685
• [release/9.0-staging] Skip SSL key log test for OpenSSL 3.5+ by @​github-actions[bot] inhttps://github.com/dotnet/runtime/pull/1166877
• [release/9.0-staging] Fix absolute path check when loading hostfxr/hostpolicy/coreclr by @​elinor-fung in https://github.com/dotnet/runtime/pull/116775
• Update openssl dependency for SLES by @​NikolaMilosavljevic in https://github.com/dotnet/runtime/pull/116922
• [9.0] Backport 115546 FLS initialization fix to 9. by @​mangod9 in https://github.com/dotnet/runtime/pull/116872
• [release/9.0-staging] Update dependencies from dotnet/roslyn by @​dotnet-maestro[bot] inhttps://github.com/dotnet/runtime/pull/1171377
• [release/9.0-staging] Update dependencies from dotnet/icu by @​dotnet-maestro[bot] inhttps://github.com/dotnet/runtime/pull/1166811
• [release/9.0-staging] Update dependencies from dotnet/cecil by @​dotnet-maestro[bot] inhttps://github.com/dotnet/runtime/pull/1164555
• [release/9.0-staging] Update dependencies from dotnet/arcade by @​dotnet-maestro[bot] inhttps://github.com/dotnet/runtime/pull/1169488
• [release/9.0-staging] Update dependencies from dotnet/hotreload-utils by @​dotnet-maestro[bot] inhttps://github.com/dotnet/runtime/pull/1155966
• [release/9.0-staging] Update dependencies from dotnet/source-build-reference-packages by @​dotnet-maestro[bot] inhttps://github.com/dotnet/runtime/pull/1155888
• [release/9.0-staging] Map version for Tahoe compatibility. by @​github-actions[bot] inhttps://github.com/dotnet/runtime/pull/1166411
• [9.0] Update CI OSes by @​richlander in https://github.com/dotnet/runtime/pull/115503
• Update branding to 9.0.8 by @​vseanreesermsft in https://github.com/dotnet/runtime/pull/117283
• [release/9.0-staging] Update dependencies from dotnet/sdk by @​dotnet-maestro[bot] inhttps://github.com/dotnet/runtime/pull/1166833
• Disable odbc tests on net9 interpreter by @​BrzVlad in https://github.com/dotnet/runtime/pull/117245
• [release/9.0-staging] Update dependencies from dotnet/cecil by @​dotnet-maestro[bot] inhttps://github.com/dotnet/runtime/pull/1172288
• [release/9.0-staging] Update dependencies from dotnet/icu by @​dotnet-maestro[bot] inhttps://github.com/dotnet/runtime/pull/1172577
• [release/9.0-staging] Update dependencies from dotnet/hotreload-utils by @​dotnet-maestro[bot] inhttps://github.com/dotnet/runtime/pull/1171844
• [release/9.0-staging] Update dependencies from dotnet/runtime-assets by @​dotnet-maestro[bot] inhttps://github.com/dotnet/runtime/pull/1166644
• [release/9.0-staging] Update dependencies from dotnet/xharness by @​dotnet-maestro[bot] inhttps://github.com/dotnet/runtime/pull/1169088
• [release/9.0] Update dependencies from dotnet/emsdk by @​dotnet-maestro[bot] inhttps://github.com/dotnet/runtime/pull/1166266
• [automated] Merge branch 'release/9.0' => 'release/9.0-staging' by @​github-actions[bot] inhttps://github.com/dotnet/runtime/pull/1172966
• [release/9.0-staging][wbt] Prevent InvalidOperationException on TestOutputHelper logging. by @​ilonatommy in https://github.com/dotnet/runtime/pull/116916
• [release/9.0-staging] Harden Ping_TimedOut_* tests by @​github-actions[bot] inhttps://github.com/dotnet/runtime/pull/1166300
• Merging internal commits for release/9.0 by @​vseanreesermsft in https://github.com/dotnet/runtime/pull/117442
• [release/9.0-staging] Fix ILogB for subnormal values by @​github-actions[bot] inhttps://github.com/dotnet/runtime/pull/1169733
• [release/9.0-staging] Fix ordering issue in interface trimming by @​github-actions[bot] inhttps://github.com/dotnet/runtime/pull/1145099
• [release/9.0-staging][mono][gc] Fix gc descriptor computation for InlineArray structs by @​BrzVlad in https://github.com/dotnet/runtime/pull/116951
• [release/9.0-staging] Fix few RandomAccess.Write edge case bugs by @​adamsitnik in https://github.com/dotnet/runtime/pull/109646
• [automated] Merge branch 'release/9.0' => 'release/9.0-staging' by @​github-actions[bot] inhttps://github.com/dotnet/runtime/pull/1174711
• [release/9.0-staging] Update dependencies from dotnet/xharness by @​dotnet-maestro[bot] inhttps://github.com/dotnet/runtime/pull/1175944
• [release/9.0-staging] Update dependencies from dotnet/sdk by @​dotnet-maestro[bot] inhttps://github.com/dotnet/runtime/pull/1175955
• [manual] Merge release/9.0-staging into release/9.0 by @​tarekgh in https://github.com/dotnet/runtime/pull/117634

Full Changelog: dotnet/runtime@v9.0.7...v9.0.8

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Configuration

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This PR has been generated by Renovate Bot.

[claude]

Claude finished @thomhurst's task —— View job

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PR Review: System.Text.Json 9.0.7 → 9.0.8 Update

Review Checklist

• Read and analyze changed files
• Review release notes for breaking changes
• Check repository guidelines (CLAUDE.md)
• Assess security and performance implications
• Evaluate test coverage impact
• Provide comprehensive feedback

Analysis Complete

Overview: This is a routine dependency update from Renovate Bot updating System.Text.Json from version 9.0.7 to 9.0.8 - a patch release containing bug fixes and improvements.

Files Changed:

• Directory.Packages.props:79 - Central package version update
• TUnit.Core/TUnit.Core.csproj:65 - VersionOverride for netstandard2.0 target

Code Quality Assessment ✅

Positive aspects:

• Uses centralized package management via Directory.Packages.props (best practice)
• Consistent versioning across both locations
• Clean, minimal changes targeting only the necessary version references
• Version override appropriately used for netstandard2.0 compatibility

Security & Performance Review ✅

Security: No security concerns identified. This is a patch release with no breaking changes or security vulnerabilities reported in the .NET 9.0.8 release notes.

Performance: Based on the release notes, this update includes:

• Bug fixes for edge cases in JSON serialization
• Performance improvements in various scenarios
• No breaking changes that would affect existing functionality

Test Coverage Impact Assessment ✅

System.Text.Json Usage Analysis:

• Found 13 occurrences across 9 C# files in the codebase
• Primary usage includes:
  • JSON source generation contexts (TUnit.Engine.Json.JsonContext)
  • RPC serialization options (TUnit.RpcTests.RpcJsonSerializerOptions)
  • Custom assertions and API testing scenarios
  • Verification/snapshot testing

Impact: This patch update should not require test changes as it's backward compatible. Existing JSON serialization/deserialization tests should continue working as expected.

Potential Issues & Recommendations

None identified. This is a low-risk update that:

• ✅ Maintains API compatibility
• ✅ Includes only bug fixes and improvements
• ✅ Uses proper centralized package management
• ✅ Follows semantic versioning (patch level)

Final Assessment

Recommendation: APPROVE ✅

This dependency update is safe to merge. The changes are minimal, well-structured, and the .NET 9.0.8 release contains only beneficial fixes without breaking changes. The automated testing should verify compatibility, and the automerge configuration is appropriate for this type of maintenance update.

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