Fix check Gradle task graph contains task

Author: dreab8

tooling/hibernate-gradle-plugin/hibernate-gradle-plugin.gradle

@@ -171,7 +171,7 @@ gradle.taskGraph.whenReady { tg ->
 }
 
 // verify credentials for publishing the plugin up front to avoid any work (only if we are publishing)
-if ( tg.hasTask( ":publishPlugins" ) && project.tasks.publishPlugins.enabled ) {
+if ( tg.hasTask( tasks.publishPlugins ) && project.tasks.publishPlugins.enabled ) {
 // we are publishing the plugin - make sure there is a credentials pair
 //
 // first, check the `GRADLE_PUBLISH_KEY` / `GRADLE_PUBLISH_SECRET` combo (env vars)