make forked publish more friendly

Signed-off-by: Scott Trent <[email protected]>

Author: trent-s

.github/workflows/publish-images.yaml

@@ -36,3 +36,7 @@ jobs:
             registry_token: ${{ secrets.QUAY_BOT_TOKEN }}
             version: ${{ steps.version.outputs.version }}
             additional_tags: ${{ steps.additional_tags.outputs.result }}
+
+      if: github.repository_owner != 'sustainable-computing-io'
+      name: forked repository
+      run: echo "Skipping official publish image step on forked repo."