chore: update CI and deployment workflows for improved notifications and permissions

- Upgraded the upload-artifact action from v3 to v4 in CI workflow for better performance.
- Added a notification step in the CI workflow to send test results via Telegram, including job status and repository details.
- Modified the deployment workflow to ensure correct file permissions before and after code updates.
- Renamed the deployment notification step for clarity and included a link to the action run details in the message.

.github/workflows/ci.yml

@@ -36,10 +36,29 @@ jobs:
       
       - name: Upload test results
         if: always()
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: test-results
           path: |
             .pytest_cache/
             htmlcov/
           retention-days: 7
+      
+      - name: Send test results notification
+        if: always()
+        uses: appleboy/telegram-action@v1.0.0
+        with:
+          to: ${{ secrets.TELEGRAM_CHAT_ID }}
+          token: ${{ secrets.TELEGRAM_BOT_TOKEN }}
+          message: |
+            🧪 CI Tests ${{ job.status }}
+            
+            Repository: prod
+            Branch: ${{ github.ref_name }}
+            Commit: ${{ github.sha }}
+            Author: ${{ github.actor }}
+            
+            ${{ job.status == 'success' && '✅ All tests passed!' || '❌ Tests failed!' }}
+            
+            View details: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
+        continue-on-error: true