Bump Avalonia.Themes.Fluent from 11.0.10 to 11.1.2

Bumps [Avalonia.Themes.Fluent](https://github.com/AvaloniaUI/Avalonia) from 11.0.10 to 11.1.2.
- [Release notes](https://github.com/AvaloniaUI/Avalonia/releases)
- [Commits](AvaloniaUI/Avalonia@11.0.10...11.1.2)

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

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

GTiff2Tiles.Avalonia/GTiff2Tiles.Avalonia.csproj

@@ -11,7 +11,7 @@
         <PackageReference Include="Avalonia.Desktop" Version="11.1.2" />
         <PackageReference Include="Avalonia.Diagnostics" Version="11.0.10" />
         <PackageReference Include="Avalonia.ReactiveUI" Version="11.0.10" />
-        <PackageReference Include="Avalonia.Themes.Fluent" Version="11.0.10" />
+        <PackageReference Include="Avalonia.Themes.Fluent" Version="11.1.2" />
         <PackageReference Include="DialogHost.Avalonia" Version="0.7.9" />
         <PackageReference Include="MaxRev.Gdal.Universal" Version="3.9.0.218" />
         <PackageReference Include="NetVips.Native" Version="8.15.2" />