Fix check for message

.github/workflows/clean_untagged.sh

@@ -18,8 +18,8 @@ do
 	echo "Checking for untagged versions for $image_name"
 	escaped_image_name=$(echo ${image_name} | sed "s/\//%2f/g")
 	response=$(curl -s  -H "Authorization: Bearer $GITHUB_TOKEN"  -H "Accept: application/vnd.github.v3+json" "https://api.github.com/orgs/devcontainers/packages/container/$escaped_image_name/versions?per_page=100")
-	message=$(echo $response | jq -r .message)
-	if [[ $message == "null" ]]; then
+	message=$(echo $response | jq -r ".message?")
+	if [[ -z "$message" || "$message" == "null" ]]; then
 		version_ids=$( | jq -r ".[] | select(.metadata.container.tags | length ==0) | .id")
 		for version_id in ${version_ids[@]};
 		do