Update branding for 3.1.21 (#37291)

Author: vseanreesermsft

eng/Versions.props

@@ -8,9 +8,9 @@
   <PropertyGroup Label="Version settings">
     <AspNetCoreMajorVersion>3</AspNetCoreMajorVersion>
     <AspNetCoreMinorVersion>1</AspNetCoreMinorVersion>
-    <AspNetCorePatchVersion>20</AspNetCorePatchVersion>
+    <AspNetCorePatchVersion>21</AspNetCorePatchVersion>
     <!-- This property should be 'false' between branding & code-merging, 'true' the rest of the time -->
-    <ValidateBaseline>true</ValidateBaseline>
+    <ValidateBaseline>false</ValidateBaseline>
     <PreReleasePreviewNumber>0</PreReleasePreviewNumber>
     <ComponentsWebAssemblyMajorVersion>3</ComponentsWebAssemblyMajorVersion>
     <ComponentsWebAssemblyMinorVersion>2</ComponentsWebAssemblyMinorVersion>