Bump CommunityToolkit.Maui.Markup from 3.3.1 to 4.0.0 in /samples (#1528

)

Bumps [CommunityToolkit.Maui.Markup](https://github.com/communitytoolkit/Maui.Markup) from 3.3.1 to 4.0.0.
- [Release notes](https://github.com/communitytoolkit/Maui.Markup/releases)
- [Commits](CommunityToolkit/Maui.Markup@3.3.1...4.0.0)

---
updated-dependencies:
- dependency-name: CommunityToolkit.Maui.Markup
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

samples/CommunityToolkit.Maui.Sample/CommunityToolkit.Maui.Sample.csproj

@@ -52,7 +52,7 @@
     <!-- Custom Fonts -->
     <MauiFont Include="Resources\Fonts\*" />
 
-    <PackageReference Include="CommunityToolkit.Maui.Markup" Version="3.3.1" />
+    <PackageReference Include="CommunityToolkit.Maui.Markup" Version="4.0.0" />
     <PackageReference Include="CommunityToolkit.Mvvm" Version="8.2.2" />
     <PackageReference Include="Microsoft.Extensions.Http.Polly" Version="8.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="8.0.0" />