Bump CommunityToolkit.Mvvm from 8.1.0 to 8.2.1

Bumps [CommunityToolkit.Mvvm](https://github.com/CommunityToolkit/dotnet) from 8.1.0 to 8.2.1.
- [Release notes](https://github.com/CommunityToolkit/dotnet/releases)
- [Commits](CommunityToolkit/dotnet@v8.1.0...v8.2.1)

---
updated-dependencies:
- dependency-name: CommunityToolkit.Mvvm
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/clients/xaml/CodeBreaker.ViewModels/CodeBreaker.ViewModels.csproj

@@ -19,7 +19,7 @@
   <ItemGroup>
     <PackageReference Include="CNInnovation.Codebreaker.Services" Version="2.0.1-beta.1.8" />
     <PackageReference Include="CNInnovation.Codebreaker.Shared" Version="2.0.1-beta.1.9" />
-    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.1.0" />
+    <PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.1" />
     <PackageReference Include="Microsoft.Extensions.Options" Version="7.0.1" />
   </ItemGroup>