Bump FluentAssertions from 7.0.0 to 8.0.0 (#507)

Bumps [FluentAssertions](https://github.com/fluentassertions/fluentassertions) from 7.0.0 to 8.0.0.
- [Release notes](https://github.com/fluentassertions/fluentassertions/releases)
- [Changelog](https://github.com/fluentassertions/fluentassertions/blob/develop/AcceptApiChanges.ps1)
- [Commits](fluentassertions/fluentassertions@7.0.0...8.0.0)

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

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

Directory.Packages.props

@@ -26,7 +26,7 @@
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageVersion Include="NuGet.Versioning" Version="6.12.1" />
     <PackageVersion Include="NuGet.Frameworks" Version="6.11.1" />
-    <PackageVersion Include="FluentAssertions" Version="7.0.0" />
+    <PackageVersion Include="FluentAssertions" Version="8.0.0" />
     <PackageVersion Include="Moq" Version="4.20.72" />
     <PackageVersion Include="xunit.analyzers" Version="1.19.0" />
     <PackageVersion Include="xunit.v3" Version="1.0.1" />