Allow for more triggers to codeowners

Author: orta

.github/workflows/codeowners-merge.yml

@@ -1,6 +1,6 @@
 name: Codeowners merging
 on:
-  pull_request_target: { types: opened }
+  pull_request_target: { types: [ opened, synchronize, reopened] }
   issue_comment: { types: created }
   pull_request_review: { types: submitted }