Bump CommunityToolkit.Mvvm from 8.4.0 to 8.4.1

---
updated-dependencies:
- dependency-name: CommunityToolkit.Mvvm
  dependency-version: 8.4.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

src/SharedXFormCoreLibrary/SharedXFormCoreLibrary.csproj

@@ -28,7 +28,7 @@
 	</ItemGroup>
 
 	<ItemGroup>
-		<PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.0" />
+		<PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.1" />
 		<PackageReference Include="Newtonsoft.Json" Version="13.0.4" />
 		<PackageReference Include="SharedNetCoreLibrary" Version="1.2.5" />
 		<PackageReference Include="Xamarin.Essentials" Version="1.8.1" />