bot (deps): bump reactiveui from 16.3.9 to 16.3.10 in /Cosmic.NET (#45)

Bumps [reactiveui](https://github.com/reactiveui/reactiveui) from 16.3.9 to 16.3.10.
- [Release notes](https://github.com/reactiveui/reactiveui/releases)
- [Commits](reactiveui/ReactiveUI@16.3.9...16.3.10)

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

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

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

Author: dependabot[bot]

Cosmic.NET/cosmo/Cosmo.csproj

@@ -7,6 +7,6 @@
     <Copyright>Copyright © Joshua Kempner 2008-2021</Copyright>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="reactiveui" Version="16.3.9" />
+    <PackageReference Include="reactiveui" Version="16.3.10" />
   </ItemGroup>
 </Project>