(deps): Bump NSubstitute from 5.1.0 to 5.3.0 in /src

Bumps [NSubstitute](https://github.com/nsubstitute/NSubstitute) from 5.1.0 to 5.3.0.
- [Release notes](https://github.com/nsubstitute/NSubstitute/releases)
- [Changelog](https://github.com/nsubstitute/NSubstitute/blob/main/CHANGELOG.md)
- [Commits](nsubstitute/NSubstitute@v5.1.0...v5.3.0)

---
updated-dependencies:
- dependency-name: NSubstitute
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

src/Directory.Packages.props

@@ -31,7 +31,7 @@
     <PackageVersion Include="Microsoft.Extensions.Options" Version="8.0.2" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
     <PackageVersion Include="Microsoft.Win32.Registry" Version="6.0.0-preview.5.21301.5" />
-    <PackageVersion Include="NSubstitute" Version="5.1.0" />
+    <PackageVersion Include="NSubstitute" Version="5.3.0" />
     <PackageVersion Include="NUnit" Version="4.2.2" />
     <PackageVersion Include="NUnit.Analyzers" Version="4.3.0" />
     <PackageVersion Include="NUnit3TestAdapter" Version="4.6.0" />