Bump Avalonia from 11.2.8 to 11.3.0

Bumps [Avalonia](https://github.com/AvaloniaUI/Avalonia) from 11.2.8 to 11.3.0.
- [Release notes](https://github.com/AvaloniaUI/Avalonia/releases)
- [Commits](AvaloniaUI/Avalonia@11.2.8...11.3.0)

---
updated-dependencies:
- dependency-name: Avalonia
  dependency-version: 11.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -15,7 +15,7 @@
     <PackageVersion Include="xunit.v3" Version="2.0.1" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.0.2" />
     <!-- After an upgrade of these libraries the nuspec file should also be updated -->
-    <PackageVersion Include="Avalonia" Version="11.2.8" />
+    <PackageVersion Include="Avalonia" Version="11.3.0" />
     <PackageVersion Include="System.Drawing.Common" Version="8.0.14" />
   </ItemGroup>
 </Project>