build(deps): update ReactiveUI requirement from 10.* to 11.* (#52)

Updates the requirements on [ReactiveUI](https://github.com/reactiveui/reactiveui) to permit the latest version.
- [Release notes](https://github.com/reactiveui/reactiveui/releases)
- [Commits](reactiveui/ReactiveUI@10.0.1-preview.2...11.0.1)

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

Author: dependabot-preview[bot]

src/ReactiveUI.Validation/ReactiveUI.Validation.csproj

@@ -17,6 +17,6 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Include="ReactiveUI" Version="10.*" />
+    <PackageReference Include="ReactiveUI" Version="11.*" />
   </ItemGroup>
 </Project>