Bump ReactiveUI from 14.2.1 to 17.1.9 (#1541)

Bumps [ReactiveUI](https://github.com/reactiveui/reactiveui) from 14.2.1 to 17.1.9.
- [Release notes](https://github.com/reactiveui/reactiveui/releases)
- [Commits](https://github.com/reactiveui/reactiveui/compare/14.2.1...17.1.9)

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

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

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

ReactiveExample/ReactiveExample.csproj

@@ -5,7 +5,7 @@
     </PropertyGroup>
     <ItemGroup>
         <PackageReference Include="ReactiveUI.Fody" Version="16.3.10" />
-        <PackageReference Include="ReactiveUI" Version="16.3.10" />
+        <PackageReference Include="ReactiveUI" Version="17.1.9" />
         <PackageReference Include="ReactiveMarbles.ObservableEvents.SourceGenerator" Version="1.1.4" PrivateAssets="all" />
     </ItemGroup>
     <ItemGroup>