fix: version static assets on test deployment

backend/config/settings.py

@@ -1,9 +1,11 @@
 import os
 import sys
+import time
 from pathlib import Path
 from urllib.parse import urlsplit
 
 BASE_DIR = Path(__file__).resolve().parent.parent
+STATIC_ASSET_VERSION = os.getenv('STATIC_ASSET_VERSION', str(int(time.time())))
 
 def _split_csv_env(name: str, default: str = ''):
     return [item.strip() for item in os.getenv(name, default).split(',') if item.strip()]