Check if previous tag is current tag

monthlymerge.yml

@@ -71,7 +71,7 @@ release_gitlab:
     # tags, this should be ok.
     - PREVIOUS_TAG=$(git tag --merged ${CI_COMMIT_SHA} | grep -P '^\d{4}.\d{2}.\d+$' | sort | tail -n 2 | head -n 1)
     - |
-      if [ -z "$PREVIOUS_TAG" ]; then
+      if [ -z "$PREVIOUS_TAG" ] || [ "$PREVIOUS_TAG" = "$CI_COMMIT_TAG" ]; then
         echo "Could not find previous tag, exiting"
         false
       fi