Bump Avalonia from 11.0.11 to 11.1.2

Bumps [Avalonia](https://github.com/AvaloniaUI/Avalonia) from 11.0.11 to 11.1.2.
- [Release notes](https://github.com/AvaloniaUI/Avalonia/releases)
- [Commits](AvaloniaUI/Avalonia@11.0.11...11.1.2)

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

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

src/OpenCiv1.csproj

@@ -31,7 +31,7 @@
  </ItemGroup>
 
  <ItemGroup>
- <PackageReference Include="Avalonia" Version="11.0.11" />
+ <PackageReference Include="Avalonia" Version="11.1.2" />
  <PackageReference Include="Avalonia.Desktop" Version="11.0.11" />
  <PackageReference Include="Avalonia.Themes.Fluent" Version="11.0.11" />
  <PackageReference Include="Avalonia.Fonts.Inter" Version="11.0.11" />