build(deps): bump MahApps.Metro from 2.4.9 to 2.4.10 in /samples

Bumps [MahApps.Metro](https://github.com/MahApps/MahApps.Metro) from 2.4.9 to 2.4.10.
- [Release notes](https://github.com/MahApps/MahApps.Metro/releases)
- [Changelog](https://github.com/MahApps/MahApps.Metro/blob/develop/GitReleaseManager.yaml)
- [Commits](MahApps/MahApps.Metro@2.4.9...2.4.10)

---
updated-dependencies:
- dependency-name: MahApps.Metro
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

samples/LoginApp.Wpf/LoginApp.Wpf.csproj

@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="MahApps.Metro" Version="2.4.9" />
+    <PackageReference Include="MahApps.Metro" Version="2.4.10" />
     <PackageReference Include="ReactiveUI.WPF" Version="19.*" />
   </ItemGroup>