chore(deps): bump FluentAssertions from 6.2.0 to 6.3.0 in /src (#198)

Bumps [FluentAssertions](https://github.com/fluentassertions/fluentassertions) from 6.2.0 to 6.3.0.
- [Release notes](https://github.com/fluentassertions/fluentassertions/releases)
- [Changelog](https://github.com/fluentassertions/fluentassertions/blob/master/AcceptApiChanges.ps1)
- [Commits](https://github.com/fluentassertions/fluentassertions/compare/6.2.0...6.3.0)

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

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

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

src/Directory.build.props

@@ -35,7 +35,7 @@
     <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
     <PackageReference Include="Xunit.SkippableFact" Version="1.4.13" />
     <PackageReference Include="Xunit.StaFact" Version="1.0.37" />
-    <PackageReference Include="FluentAssertions" Version="6.2.0" />
+    <PackageReference Include="FluentAssertions" Version="6.3.0" />
     <PackageReference Include="DiffEngine" Version="8.5.3" />
     <PackageReference Include="PublicApiGenerator" Version="10.2.0" />
     <PackageReference Include="coverlet.msbuild" Version="3.1.0">