Bump Microsoft.Toolkit.Mvvm from 7.1.0 to 7.1.1 (#6569)

Bumps [Microsoft.Toolkit.Mvvm](https://github.com/CommunityToolkit/WindowsCommunityToolkit) from 7.1.0 to 7.1.1.
- [Release notes](https://github.com/CommunityToolkit/WindowsCommunityToolkit/releases)
- [Commits](CommunityToolkit/WindowsCommunityToolkit@v7.1.0...v7.1.1)

---
updated-dependencies:
- dependency-name: Microsoft.Toolkit.Mvvm
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

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

Author: dependabot[bot]

Files/Files.csproj

@@ -1453,7 +1453,7 @@
       <Version>6.2.13</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.Toolkit.Mvvm">
-      <Version>7.1.0</Version>
+      <Version>7.1.1</Version>
     </PackageReference>
     <PackageReference Include="Microsoft.Toolkit.Uwp">
       <Version>7.1.0</Version>