build(deps): bump MessageBox.Avalonia from 1.2.0 to 1.3.1 in /Sample (#…

…408)

Bumps [MessageBox.Avalonia](https://github.com/CreateLab/MessageBox.Avalonia) from 1.2.0 to 1.3.1.
- [Release notes](https://github.com/CreateLab/MessageBox.Avalonia/releases)
- [Commits](https://github.com/CreateLab/MessageBox.Avalonia/commits)

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

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

Sample/SextantSample.Avalonia/SextantSample.Avalonia.csproj

@@ -8,7 +8,7 @@
         <PackageReference Include="Avalonia.Desktop" Version="0.10.0" />
         <PackageReference Include="Avalonia.ReactiveUI" Version="0.10.4" />
         <PackageReference Include="Citrus.Avalonia" Version="1.4.3" />
-        <PackageReference Include="MessageBox.Avalonia" Version="1.2.0" />
+        <PackageReference Include="MessageBox.Avalonia" Version="1.3.1" />
         <PackageReference Include="ReactiveUI" Version="13.*" />
     </ItemGroup>
     <ItemGroup>