Bump MudBlazor in /src/.template.base/wasm-hosted/Client

Bumps [MudBlazor](https://github.com/MudBlazor/MudBlazor) from 6.8.0 to 6.9.0.
- [Release notes](https://github.com/MudBlazor/MudBlazor/releases)
- [Changelog](https://github.com/MudBlazor/MudBlazor/blob/dev/CHANGELOG.md)
- [Commits](MudBlazor/MudBlazor@v6.8.0...v6.9.0)

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

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

src/.template.base/wasm-hosted/Client/MudBlazor.Template.Client.csproj

@@ -9,7 +9,7 @@
 	<ItemGroup>
 		<PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="6.0.10" />
 		<PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="6.0.10" PrivateAssets="all" />
-		<PackageReference Include="MudBlazor" Version="6.8.0" />
+		<PackageReference Include="MudBlazor" Version="6.9.0" />
 	</ItemGroup>
 
 	<ItemGroup>