Update GitHub labels option is turned on by default (dotCMS#32200)

### Proposed Changes
The flag to update GitHub labels is enabled by default. It makes the
generation process easier

Author: nollymar

.github/workflows/legacy-release_maven-release-process.yml

@@ -26,7 +26,7 @@ on:
       update_github_labels:
         description: 'Update GitHub labels'
         type: boolean
-        default: false
+        default: true
         required: false
       notify_slack:
         description: 'Notify Slack'