Update branding to 6.5.0 (#2260)

Author: AndriySvyryd

eng/Versions.props

@@ -1,16 +1,16 @@
 <Project>
   <PropertyGroup>
     <VersionPrefix>6.5.0</VersionPrefix>
-    <PreReleaseVersionLabel>preview</PreReleaseVersionLabel>
-    <PreReleaseVersionIteration>2</PreReleaseVersionIteration>
+    <PreReleaseVersionLabel>rtm</PreReleaseVersionLabel>
+    <PreReleaseVersionIteration></PreReleaseVersionIteration>
     <SemanticVersioningV1>True</SemanticVersioningV1>
     <IncludeSourceRevisionInInformationalVersion>False</IncludeSourceRevisionInInformationalVersion>
     <UsingToolNetFrameworkReferenceAssemblies>True</UsingToolNetFrameworkReferenceAssemblies>
     <UsingToolXliff>False</UsingToolXliff>
     <!--
         When StabilizePackageVersion is set to 'true', this branch will produce stable outputs for 'Shipping' packages
     -->
-    <StabilizePackageVersion Condition="'$(StabilizePackageVersion)' == ''">false</StabilizePackageVersion>
+    <StabilizePackageVersion Condition="'$(StabilizePackageVersion)' == ''">true</StabilizePackageVersion>
     <DotNetFinalVersionKind Condition="'$(StabilizePackageVersion)' == 'true'">release</DotNetFinalVersionKind>
     <DefaultNetCoreTargetFramework>net9.0</DefaultNetCoreTargetFramework>
   </PropertyGroup>