Bump the testing group with 2 updates

Bumps the testing group with 2 updates: [FluentAssertions](https://github.com/fluentassertions/fluentassertions) and [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest).


Updates `FluentAssertions` from 6.12.2 to 7.0.0
- [Release notes](https://github.com/fluentassertions/fluentassertions/releases)
- [Changelog](https://github.com/fluentassertions/fluentassertions/blob/develop/AcceptApiChanges.ps1)
- [Commits](fluentassertions/fluentassertions@6.12.2...7.0.0)

Updates `Microsoft.NET.Test.Sdk` from 17.11.1 to 17.12.0
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Changelog](https://github.com/microsoft/vstest/blob/main/docs/releases.md)
- [Commits](microsoft/vstest@v17.11.1...v17.12.0)

---
updated-dependencies:
- dependency-name: FluentAssertions
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: testing
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: testing
...

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

BaldersGait.UnitTests/BaldersGait.UnitTests.csproj

@@ -12,8 +12,8 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="FluentAssertions" Version="6.12.2" />
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1"/>
+        <PackageReference Include="FluentAssertions" Version="7.0.0" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0"/>
         <PackageReference Include="xunit" Version="2.9.2"/>
         <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>