Update mergeable.yml

.github/mergeable.yml

@@ -3,6 +3,15 @@ mergeable:
     - when: pull_request.*, pull_request_review.*
       name: "Approval check"
       validate:
+        - do: commit
+          message:
+            regex: '^(feat|docs|chore|fix|refactor|test|style|perf)(\(\w+\))?:.+$'
+            message: 'Custom message' # Semantic release conventions must be followed
+            skip_merge: true # Optional, Default is true. Will skip commit with message that includes 'Merge'
+            oldest_only: false # Optional, Default is false. Only check the regex against the oldest commit
+            newest_only: false # Optional, Default is false. Only check the regex against the newest commit
+            single_commit_only: false # Optional, Default is false. only process this validator if there is one commit
+            message_type: '' # Optional, only check regex against the field specified. Default is '', which processes the 'message' field. Can also be set to 'author_email' or 'committer_email'
           - do: approvals
             min:
                 count: 1