Bump Microsoft.Net.Compilers.Toolset in the microsoft group

Bumps the microsoft group with 1 update: [Microsoft.Net.Compilers.Toolset](https://github.com/dotnet/roslyn).


Updates `Microsoft.Net.Compilers.Toolset` from 4.11.0 to 4.12.0
- [Release notes](https://github.com/dotnet/roslyn/releases)
- [Changelog](https://github.com/dotnet/roslyn/blob/main/docs/Breaking%20API%20Changes.md)
- [Commits](https://github.com/dotnet/roslyn/commits)

---
updated-dependencies:
- dependency-name: Microsoft.Net.Compilers.Toolset
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: microsoft
...

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

Frontend/Bones.WebUI/Bones.WebUI.csproj

@@ -27,7 +27,7 @@
     <ItemGroup>
         <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="9.0.0" />
         <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.Authentication" Version="9.0.0" />
-        <PackageReference Include="Microsoft.Net.Compilers.Toolset" Version="4.11.0">
+        <PackageReference Include="Microsoft.Net.Compilers.Toolset" Version="4.12.0">
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>