Update GitHub Actions workflow to use Ubuntu 22.04 for scheduled tasks

- Changed the runner environment from 'ubuntu-latest' to 'ubuntu-22.04' in the scheduled task workflow for better compatibility and stability.
- This update ensures that the workflow runs on a more specific and supported version of Ubuntu, potentially improving performance and reliability.

.github/workflows/scheduled-task_update-sponsors.yml

@@ -5,7 +5,7 @@ on:
     - cron: 30 15 * * 0-6
 jobs:
   deploy:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout 🛎️
         uses: actions/checkout@v4