grant n8n postgres user permissions for public schema

n8n/postgres-configmap.yaml

@@ -11,7 +11,9 @@ data:
     	psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL
     		CREATE USER "${POSTGRES_NON_ROOT_USER}" WITH PASSWORD '${POSTGRES_NON_ROOT_PASSWORD}';
     		GRANT ALL PRIVILEGES ON DATABASE ${POSTGRES_DB} TO "${POSTGRES_NON_ROOT_USER}";
+                GRANT ALL ON SCHEMA public TO "${POSTGRES_NON_ROOT_USER}";
+                ALTER SCHEMA public OWNER TO "$POSTGRES_USER";
     	EOSQL
     else
     	echo "SETUP INFO: No Environment variables given!"
-    fi
+    fi