Merge in 'release/6.0' changes

Author: dotnet-bot

eng/Versions.props

@@ -8,7 +8,7 @@
   <PropertyGroup Label="Version settings">
     <AspNetCoreMajorVersion>6</AspNetCoreMajorVersion>
     <AspNetCoreMinorVersion>0</AspNetCoreMinorVersion>
-    <AspNetCorePatchVersion>20</AspNetCorePatchVersion>
+    <AspNetCorePatchVersion>21</AspNetCorePatchVersion>
     <ValidateBaseline>false</ValidateBaseline>
     <!--
         When StabilizePackageVersion is set to 'true', this branch will produce stable outputs for 'Shipping' packages