Update auto-respond-pr.yml to latest pr (#1171)

Author: jonathanKingston

.github/workflows/auto-respond-pr.yml

@@ -37,6 +37,8 @@ jobs:
           cd pr
           git config --global user.email "[email protected]"
           git config --global user.name "dax"
+          echo ${{ github.event.pull_request.base.ref }}
+          git fetch origin ${{ github.event.pull_request.base.ref }}
           git rebase origin/${{ github.event.pull_request.base.ref }}
           npm install
           npm run build