Internal servicing fix: match Arcade stage name (dotnet/core-setup#8283)

Commit migrated from https://github.com/dotnet/core-setup/commit/52869cf2cb4bb5890dc4c5e250d68b9054130582

eng/pipelines/installer/azure-pipelines.yml

@@ -196,7 +196,7 @@ stages:
           bar: PublicRelease_30_Channel_Id
           storage: release/3.0-preview9
           public: true
-      - dependsOn: NetCore_30_Internal_Servicing_Publish
+      - dependsOn: NetCore_30_Internal_Servicing_Publishing
         channel:
           name: .NET Core 3 Internal Servicing
           bar: InternalServicing_30_Channel_Id