build(deps): bump Microsoft.WindowsAppSDK from 1.1.0 to 1.1.1 in /src (#3295)

Bumps [Microsoft.WindowsAppSDK](https://github.com/microsoft/windowsappsdk) from 1.1.0 to 1.1.1.
- [Release notes](https://github.com/microsoft/windowsappsdk/releases)
- [Commits](microsoft/WindowsAppSDK@v1.1.0...v1.1.1)

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

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

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

Author: dependabot[bot]

src/ReactiveUI.WinUI/ReactiveUI.WinUI.csproj

@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.WindowsAppSDK" Version="1.1.0" />
+    <PackageReference Include="Microsoft.WindowsAppSDK" Version="1.1.1" />
   </ItemGroup>
 
   <!-- Workaround for https://github.com/microsoft/WindowsAppSDK/issues/1217 -->