chore(action): add auto-merge for release pull request

Signed-off-by: Pranav C <pranavxc@gmail.com>

.github/workflows/release-npm.yml

@@ -53,3 +53,8 @@ jobs:
           echo "Pull Request Number - ${{ steps.cpr.outputs.pull-request-number }}"
           echo "Pull Request URL - ${{ steps.cpr.outputs.pull-request-url }}"
 
+      - name: automerge
+        uses: "pascalgn/automerge-action@v0.14.3"
+        env:
+          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+          PULL_REQUEST: "${{ steps.cpr.outputs.pull-request-number }}"