build(deps): bump Avalonia.Desktop and Avalonia in /src

Bumps [Avalonia.Desktop](https://github.com/AvaloniaUI/Avalonia) and [Avalonia](https://github.com/AvaloniaUI/Avalonia). These dependencies needed to be updated together.

Updates `Avalonia.Desktop` from 0.10.12 to 11.0.6
- [Release notes](https://github.com/AvaloniaUI/Avalonia/releases)
- [Commits](AvaloniaUI/Avalonia@0.10.12...11.0.6)

Updates `Avalonia` from 0.10.12 to 11.0.6
- [Release notes](https://github.com/AvaloniaUI/Avalonia/releases)
- [Commits](AvaloniaUI/Avalonia@0.10.12...11.0.6)

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

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

src/Sextant.Avalonia/Sextant.Avalonia.csproj

@@ -9,8 +9,8 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="ReactiveUI" Version="19.*" />
-    <PackageReference Include="Avalonia" Version="0.10.12" />
-    <PackageReference Include="Avalonia.Desktop" Version="0.10.12" />
+    <PackageReference Include="Avalonia" Version="11.0.6" />
+    <PackageReference Include="Avalonia.Desktop" Version="11.0.6" />
     <PackageReference Include="Avalonia.ReactiveUI" Version="0.10.12" />
   </ItemGroup>
   <ItemGroup>