build(deps): bump ReactiveUI from 14.3.10 to 15.1.1 in /src (#758)

Bumps [ReactiveUI](https://github.com/reactiveui/reactiveui) from 14.3.10 to 15.1.1.
- [Release notes](https://github.com/reactiveui/reactiveui/releases)
- [Commits](reactiveui/ReactiveUI@14.3.10...15.1.1)

---
updated-dependencies:
- dependency-name: ReactiveUI
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

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

src/ReactiveUI.DI.Tests/ReactiveUI.DI.Tests.csproj

@@ -43,7 +43,7 @@
   </Choose>
 
   <ItemGroup>
-    <PackageReference Include="ReactiveUI" Version="14.3.10" />
+    <PackageReference Include="ReactiveUI" Version="15.1.1" />
   </ItemGroup>
 
   <ItemGroup>