Use re-usable CLA workflow instead (#119)

.github/workflows/cla.yml

@@ -16,18 +16,4 @@ permissions:
 
 jobs:
   CLAAssistant:
-    runs-on: ubuntu-latest
-    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') && github.repository_owner == 'forem'
-        uses: contributor-assistant/[email protected]
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          PERSONAL_ACCESS_TOKEN: ${{ secrets.CLA_PERSONAL_ACCESS_TOKEN }}
-        with:
-          path-to-signatures: 'signatures/version1/cla.json'
-          path-to-document: 'https://github.com/forem/forem/blob/main/CLA.md'
-          branch: 'main' # branch should not be protected
-          allowlist: ${{ secrets.CLA_ALLOWLIST }}
-          remote-repository-name: ${{ secrets.CLA_REPOSITORY }}
-          lock-pullrequest-aftermerge: false
+    uses: forem/forem/.github/workflows/cla.yml@main