Bump Serilog.Sinks.File from 5.0.0 to 6.0.0 in /src (#502)

Bumps [Serilog.Sinks.File](https://github.com/serilog/serilog-sinks-file) from 5.0.0 to 6.0.0.
- [Release notes](https://github.com/serilog/serilog-sinks-file/releases)
- [Changelog](https://github.com/serilog/serilog-sinks-file/blob/dev/CHANGES.md)
- [Commits](serilog/serilog-sinks-file@v5.0.0...v6.0.0)

---
updated-dependencies:
- dependency-name: Serilog.Sinks.File
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

src/Directory.Packages.props

@@ -14,7 +14,7 @@
     <PackageVersion Include="ProjectDefaults" Version="1.0.128" />
     <PackageVersion Include="Resourcer.Fody" Version="1.8.1" />
     <PackageVersion Include="Serilog" Version="4.0.0" />
-    <PackageVersion Include="Serilog.Sinks.File" Version="5.0.0" />
+    <PackageVersion Include="Serilog.Sinks.File" Version="6.0.0" />
     <PackageVersion Include="System.Collections.Immutable" Version="8.0.0" />
     <PackageVersion Include="System.Globalization.Extensions" Version="4.3.0" />
     <PackageVersion Include="System.IO.Compression" Version="4.3.0" />