Add owner to rebase filters

Author: stefanprodan

.github/workflows/rebase.yaml

@@ -8,7 +8,7 @@ on:
 
 jobs:
   rebase:
-    if: github.event.issue.pull_request != '' && contains(github.event.comment.body, '/rebase') && (github.event.comment.author_association == 'CONTRIBUTOR' || github.event.comment.author_association == 'MEMBER')
+    if: github.event.issue.pull_request != '' && contains(github.event.comment.body, '/rebase') && (github.event.comment.author_association == 'CONTRIBUTOR' || github.event.comment.author_association == 'MEMBER' || github.event.comment.author_association == 'OWNER')
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the latest code