Merge extension updates automatically (#150)

Author: JakeSCahill

.github/workflows/update-extensions.yml

@@ -38,14 +38,6 @@ jobs:
           git config --global user.email "[email protected]"
           git add package.json package-lock.json
           git commit -m "Update @redpanda-data/docs-extensions-and-macros"
+          git push origin ${{ matrix.branch }}
         env:
           ACCESS_TOKEN: ${{ env.ACTIONS_BOT_TOKEN }}
-      - uses: peter-evans/create-pull-request@v6
-        with:
-          commit-message: "auto-docs: update @redpanda-data/docs-extensions-and-macros"
-          token: ${{ env.ACTIONS_BOT_TOKEN }}
-          branch: update-branch-${{ matrix.branch }}
-          title: "auto-docs: Update extensions on ${{ matrix.branch }}"
-          body: "This PR updates the @redpanda-data/docs-extensions-and-macros package on the ${{ matrix.branch }} branch."
-          labels: auto-docs
-          reviewers: micheleRP, JakeSCahill, Deflaimun