make changes to the workflow file

.gitea/workflows/update-calendar.yaml

@@ -33,19 +33,17 @@ jobs:
         run: |
           python generate_calendar.py
 
-      - name: Check for changes
-        id: check_changes
-        run: |
-          git diff --quiet calendar.ics README.md || echo "changed=true" >> $GITHUB_OUTPUT
-
       - name: Commit and push changes
-        if: steps.check_changes.outputs.changed == 'true'
         run: |
           git config --local user.email "noreply@thelinuxcast.org"
           git config --local user.name "Calendar Bot"
           git add calendar.ics README.md
+          if git diff --staged --quiet; then
+            echo "No changes to commit"
+          else
             git commit -m "Auto-update calendar files
 
           🤖 Generated with automation"
             git pull --rebase origin main
             git push
+          fi