Bump the all-dependencies group with 1 update (#72)

Bumps CommunityToolkit.Mvvm from 8.4.0 to 8.4.1

---
updated-dependencies:
- dependency-name: CommunityToolkit.Mvvm
  dependency-version: 8.4.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all-dependencies
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

src/GpxViewer2/GpxViewer2.csproj

@@ -13,7 +13,7 @@
         <PackageReference Include="Avalonia.Themes.Fluent" Version="11.3.12" />
         <PackageReference Include="Avalonia.Fonts.Inter" Version="11.3.12" />
         <PackageReference Condition="'$(Configuration)' == 'Debug'" Include="Avalonia.Diagnostics" Version="11.3.12" />
-        <PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.0" />
+        <PackageReference Include="CommunityToolkit.Mvvm" Version="8.4.1" />
         <PackageReference Include="LiveChartsCore.SkiaSharpView.Avalonia" Version="2.0.0-rc6.1" />
         <PackageReference Include="Mapsui.Avalonia" Version="5.0.2" />
         <PackageReference Include="NSubstitute" Version="5.3.0" />