fix: handle failures fetching rsf list

src/mirrors/tasks.py

@@ -1,3 +1,5 @@
+import logging
+
 import requests
 
 from src.database import get_db_session
@@ -7,10 +9,16 @@ from src.utils import repeat_every
 
 @repeat_every(seconds=600)
 def update_rsf_mirrors():
-    with get_db_session() as db:
+        try:
             r = requests.get(
-            "https://raw.githubusercontent.com/RSF-RWB/collateralfreedom/refs/heads/main/sites.json"
+                "https://raw.githubusercontent.com/RSF-RWB/collateralfreedom/refs/heads/main/sites.json",
+                timeout = 30,
             )
+            r.raise_for_status()
             mirrors = r.json()
+        except (requests.RequestException, ValueError) as e:
+            logging.exception(e)
+            return
+        with get_db_session() as db:
             refresh_mirrors(db, -2, mirrors)  # Tracking as hardcoded pool -2
             db.commit()