chore: bump FluentAssertions (#3226)

Bumps [FluentAssertions](https://github.com/fluentassertions/fluentassertions) from 8.1.1 to 8.2.0.
- [Release notes](https://github.com/fluentassertions/fluentassertions/releases)
- [Changelog](https://github.com/fluentassertions/fluentassertions/blob/main/AcceptApiChanges.ps1)
- [Commits](fluentassertions/fluentassertions@8.1.1...8.2.0)

---
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>
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>
Co-authored-by: Thomas Poignant <thomas.poignant@gofeatureflag.org>

Author: 3 people

openfeature/provider_tests/dotnet-integration-tests/ProviderTests/ProviderTests.csproj

@@ -10,7 +10,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="FluentAssertions" Version="8.1.1" />
+        <PackageReference Include="FluentAssertions" Version="8.2.0" />
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.13.0" />
         <PackageReference Include="NUnit" Version="4.3.2" />
         <PackageReference Include="NUnit3TestAdapter" Version="5.0.0" />