Merge branch 'maintenance/update-dependencies' into release/5.1.0

Updated all NuGet and npm dependencies. Most notably, this includes updating to the release version of the underlying OnTopic 5.1.0 library, which will correspond to the release version of OnTopic Editor 5.1.0. In addition, I updated to a major release of CSS Nano, and fixed a bug in how Bootstrap 5.0.0 Beta 3 utilities were resolved, which had inadvertently broken responsive features.

Author: JeremyCaney

OnTopic.Editor.AspNetCore.Attributes/OnTopic.Editor.AspNetCore.Attributes.csproj

@@ -25,7 +25,7 @@
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="OnTopic" Version="5.1.0-rc.1" />
+    <PackageReference Include="OnTopic" Version="5.1.0" />
   </ItemGroup>
 
   <ItemGroup>