Bump ReactiveUI from 19.3.3 to 19.4.1 (#85)

Bumps [ReactiveUI](https://github.com/reactiveui/reactiveui) from 19.3.3 to 19.4.1.
- [Release notes](https://github.com/reactiveui/reactiveui/releases)
- [Commits](reactiveui/ReactiveUI@19.3.3...19.4.1)

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

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

benches/Kinetic.Benchmarks/Kinetic.Benchmarks.csproj

@@ -9,6 +9,6 @@
  <ProjectReference Include="..\..\src\Kinetic\Kinetic.csproj" />
  <PackageReference Include="BenchmarkDotNet" Version="0.13.6" />
  <PackageReference Include="BenchmarkDotNet.Diagnostics.Windows" Version="0.13.5"/>
- <PackageReference Include="ReactiveUI" Version="19.3.3" />
+ <PackageReference Include="ReactiveUI" Version="19.4.1" />
  </ItemGroup>
 </Project>