ci(deps): bump peter-evans/create-pull-request from 7.0.7 to 7.0.8 (#15947)

Author: dependabot[bot]

.github/workflows/external-contributors.yml

@@ -36,7 +36,7 @@ jobs:
           author_association: ${{ github.event.pull_request.author_association }}
 
       - name: Create PR with changes
-        uses: peter-evans/create-pull-request@dd2324fc52d5d43c699a5636bcf19fceaa70c284
+        uses: peter-evans/create-pull-request@271a8d0340265f705b14b6d32b9829c1cb33d45e
         with:
           # This token is scoped to Daniel Griesser
           # If we used the default GITHUB_TOKEN, the resulting PR would not trigger CI :(