Updated to dotnet 6 proper

Author: koenbeuk

.github/workflows/release.yml

@@ -26,7 +26,6 @@ jobs:
         uses: actions/setup-dotnet@v1
         with:
           dotnet-version: 6.0.x
-          include-prerelease: True
       - name: Create Release NuGet package
         run: |
           arrTag=(${GITHUB_REF//\// })

Directory.Build.props

@@ -19,8 +19,8 @@
 
   <PropertyGroup>
     <EFCoreTriggeredVersion>3</EFCoreTriggeredVersion>
-    <EFCorePackageVersion>6.0.0-rc.1.21452.10</EFCorePackageVersion>
-    <MicrosoftExtensionsVersion>6.0.0-rc.1.21451.13</MicrosoftExtensionsVersion>
+    <EFCorePackageVersion>6.0.0</EFCorePackageVersion>
+    <MicrosoftExtensionsVersion>6.0.0</MicrosoftExtensionsVersion>
   </PropertyGroup>
 
   <PropertyGroup Condition=" '$(Configuration)' == 'DebugV2' Or '$(Configuration)' == 'ReleaseV2' ">