allow workflow dispatch

Signed-off-by: Jakub Jarosz <[email protected]>

Author: jjngx

.github/workflows/mend.yml

@@ -47,7 +47,7 @@ jobs:
           event_found=0
           ref_found=0
           ALLOWED_ORGS="nginx nginxinc"
-          ALLOWED_EVENTS="push"
+          ALLOWED_EVENTS="push workflow_dispatch"
           ALLOWED_REFS="refs/heads/main refs/heads/master refs/heads/stable-1.28"
           for org in $ALLOWED_ORGS; do
             if [ "$org" == "$GITHUB_REPOSITORY_OWNER" ]; then org_found=1; fi