Bump Microsoft.Toolkit.Uwp.UI.Controls from 6.1.1 to 7.0.0

Bumps [Microsoft.Toolkit.Uwp.UI.Controls](https://github.com/windows-toolkit/WindowsCommunityToolkit) from 6.1.1 to 7.0.0.
- [Release notes](https://github.com/windows-toolkit/WindowsCommunityToolkit/releases)
- [Commits](https://github.com/windows-toolkit/WindowsCommunityToolkit/commits/v7.0.0)

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

Author: dependabot[bot]

src/Stanton.App/Stanton.App.csproj

@@ -390,7 +390,7 @@
       <Version>7.0.0</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.Toolkit.Uwp.UI.Controls">
-      <Version>6.1.1</Version>
+      <Version>7.0.0</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.UI.Xaml">
       <Version>2.5.0</Version>