ci: avoid triggering a catalog update when we are not pushing on main (#319)

Signed-off-by: Niccolò Fei <niccolo.fei@enterprisedb.com>

.github/workflows/bake.yml

@@ -58,6 +58,9 @@ jobs:
     runs-on: ubuntu-24.04
     permissions:
       contents: write
+    if: |
+      github.ref == 'refs/heads/main' &&
+      ( github.event.inputs.environment == 'production' || github.event_name == 'schedule' )
     steps:
        - name: Repository Dispatch
          uses: peter-evans/repository-dispatch@ff45666b9427631e3450c54a1bcbee4d9ff4d7c0 # v3