Switch to grails/github-actions

Author: jdaugherty

.github/workflows/gradle.yml

@@ -66,7 +66,7 @@ jobs:
           if_false: ${{ github.repository }}
       - name: Publish to Github Pages
         if: steps.docs.outcome == 'success' && github.event_name == 'push' 
-        uses: micronaut-projects/github-pages-deploy-action@grails
+        uses: grails/github-pages-deploy-action@grails
         env:
           TARGET_REPOSITORY: ${{ steps.docs_target.outputs.value }}
           GH_TOKEN: ${{ secrets.GH_TOKEN }}