[release/2.2] Change prerelease label to be more accurate (#19776)

* [release/2.2] Change prerelease label to be more accurate

Not critical, but better than servicing

* CHange label

Author: mmitche

dependencies.props

@@ -18,7 +18,7 @@
     <StabilizePackageVersion Condition="'$(StabilizePackageVersion)' == ''">false</StabilizePackageVersion>
     <StableVersion Condition="'$(StabilizePackageVersion)' == 'true' and '$(StableVersion)' == ''">$(PackageVersion)</StableVersion>
 
-    <PreReleaseLabel>servicing</PreReleaseLabel>
+    <PreReleaseLabel>preview2</PreReleaseLabel>
   </PropertyGroup>
 
   <!-- Source of truth for dependency tooling: the commit hash of the dotnet/versions master branch as of the last auto-upgrade. -->