[ISV-5936] add secrets workspace to add-bundle-to-fbc-dryrun (#825)

* [ISV-5936] add secrets workspace to add-bundle-to-fbc-dryrun

* update hosted creds

Author: tomasbakk

ansible/roles/operator-pipeline/templates/openshift/pipelines/operator-hosted-pipeline.yml

@@ -1231,6 +1231,8 @@ spec:
         - name: output
           workspace: results
           subPath: summary
+        - name: registry-credentials
+          workspace: registry-credentials
 
     # merge PR
     - name: merge-pr