Run GitLab CI on "staging" and "develop" branches

.gitlab-ci.yml

@@ -3,6 +3,8 @@ workflow:
     - if: $CI_PIPELINE_SOURCE == 'merge_request_event'
     - if: $CI_COMMIT_TAG
     - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
+    - if: $CI_COMMIT_BRANCH == 'staging'
+    - if: $CI_COMMIT_BRANCH == 'develop'
 
 default:
   image: docker:27.4.1