skip dependabot from cla

Author: sgd2z

.github/workflows/cla.yaml

@@ -10,6 +10,7 @@ jobs:
   cla:
     name: Check CLA
     runs-on: ubuntu-latest
+    if: github.actor != 'dependabot[bot]'
     steps:
       - name: CLA Assistant
         if: (github.event.comment.body == 'recheck' || github.event.comment.body == 'I have read the CLA Document and I hereby sign the CLA') || github.event_name == 'pull_request_target'