build(deps): Bump FluentAssertions from 6.12.0 to 6.12.1

Bumps [FluentAssertions](https://github.com/fluentassertions/fluentassertions) from 6.12.0 to 6.12.1.
- [Release notes](https://github.com/fluentassertions/fluentassertions/releases)
- [Changelog](https://github.com/fluentassertions/fluentassertions/blob/develop/AcceptApiChanges.ps1)
- [Commits](fluentassertions/fluentassertions@6.12.0...6.12.1)

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

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

Directory.Packages.props

@@ -3,7 +3,7 @@
 		<PackageVersion Include="coverlet.msbuild" Version="6.0.2"/>
 		<PackageVersion Include="DotNet.ReproducibleBuilds" Version="1.1.1"/>
 		<PackageVersion Include="DotNet.ReproducibleBuilds.Isolated" Version="1.1.1"/>
-		<PackageVersion Include="FluentAssertions" Version="6.12.0"/>
+		<PackageVersion Include="FluentAssertions" Version="6.12.1"/>
 		<PackageVersion Include="IsExternalInit" Version="1.0.3"/>
 		<PackageVersion Include="Jetbrains.Annotations" Version="2023.3.0"/>
 		<PackageVersion Include="Microsoft.Bcl.AsyncInterfaces" Version="8.0.0"/>