[Dependabot]: Bump Avalonia.Themes.Simple and Avalonia

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

Updates `Avalonia.Themes.Simple` from 11.0.6 to 11.0.7
- [Release notes](https://github.com/AvaloniaUI/Avalonia/releases)
- [Commits](AvaloniaUI/Avalonia@11.0.6...11.0.7)

Updates `Avalonia` from 11.0.6 to 11.0.7
- [Release notes](https://github.com/AvaloniaUI/Avalonia/releases)
- [Commits](AvaloniaUI/Avalonia@11.0.6...11.0.7)

---
updated-dependencies:
- dependency-name: Avalonia.Themes.Simple
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: Avalonia
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

src/NetSparkle.Samples.Avalonia/NetSparkle.Samples.Avalonia.csproj

@@ -20,9 +20,9 @@
     <EmbeddedResource Include="NetSparkle_DSA.pub" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="Avalonia" Version="11.0.6" />
+    <PackageReference Include="Avalonia" Version="11.0.7" />
     <PackageReference Include="Avalonia.Desktop" Version="11.0.6" />
-    <PackageReference Include="Avalonia.Themes.Simple" Version="11.0.6" />
+    <PackageReference Include="Avalonia.Themes.Simple" Version="11.0.7" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\NetSparkle.UI.Avalonia\NetSparkle.UI.Avalonia.csproj" />