ci: add merger to recurring-sort.yml

Author: JesperDramsch

.github/workflows/recurring-sort.yml

@@ -32,6 +32,7 @@ jobs:
         git diff --exit-code || echo "changes=true" >> $GITHUB_OUTPUT
 
     - name: Create Pull Request
+      id: create_pr
       if: steps.git-check.outputs.changes == 'true'
       uses: peter-evans/create-pull-request@v5
       with:
@@ -43,3 +44,9 @@ jobs:
           This PR was automatically generated by the Update workflow.
         branch: automated/sort-conferences
         delete-branch: true
+        
+    - name: Auto merge
+      if: steps.create_pr.outputs.pull-request-operation == 'created'
+      run: gh pr merge --merge --auto "${{ steps.create_pr.outputs.pull-request-number }}"
+      env:
+        GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}