fix github action to make calendar work (allowed execution on schedule and not just on commits or pull requests)

Author: Marek Krug

.github/workflows/release.yml

@@ -74,7 +74,7 @@ jobs:
     needs: [ calendar ]
     runs-on: ubuntu-latest
     environment: staging
-    if: github.ref == 'refs/heads/staging' && github.event_name == 'push'
+    if: (github.ref == 'refs/heads/staging' && github.event_name == 'push') || github.event_name == 'schedule'
     steps:
       - name: Download pages
         uses: actions/download-artifact@v4
@@ -102,7 +102,7 @@ jobs:
     needs: [ calendar ]
     runs-on: ubuntu-latest
     environment: production
-    if: github.ref == 'refs/heads/production' && github.event_name == 'push'
+    if: (github.ref == 'refs/heads/production' && github.event_name == 'push') || github.event_name == 'schedule'
     steps:
       - name: Download pages
         uses: actions/download-artifact@v4
@@ -126,3 +126,4 @@ jobs:
           body: Website production version ${{ env.timestamp }}
           artifacts: release-production-${{ env.timestamp }}.zip
           token: ${{ secrets.GITHUB_TOKEN }}
+