chore(deps): bump FluentAssertions in the all group

Bumps the all group with 1 update: [FluentAssertions](https://github.com/fluentassertions/fluentassertions).


Updates `FluentAssertions` from 6.12.1 to 6.12.2
- [Release notes](https://github.com/fluentassertions/fluentassertions/releases)
- [Changelog](https://github.com/fluentassertions/fluentassertions/blob/develop/AcceptApiChanges.ps1)
- [Commits](fluentassertions/fluentassertions@6.12.1...6.12.2)

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

Signed-off-by: dependabot[bot] <[email protected]>

src/tests/AI21.IntegrationTests/AI21.IntegrationTests.csproj

@@ -12,7 +12,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
     <PackageReference Include="MSTest.TestAdapter" Version="3.6.2" />
     <PackageReference Include="MSTest.TestFramework" Version="3.6.2" />
-    <PackageReference Include="FluentAssertions" Version="6.12.1" />
+    <PackageReference Include="FluentAssertions" Version="6.12.2" />
   </ItemGroup>
 
   <ItemGroup Label="GlobalUsings">