fix: Make sure requests to jvndb timeout relatively fast

vulnerabilitylookup/feeders/jvndb.py

@@ -25,6 +25,8 @@ def __init__(self) -> None:
         self.files_storage.mkdir(parents=True, exist_ok=True)
 
     def _fetch_feeds(self) -> list[Path]:
+        # Note: These files need to be processed in order, a newer one may contain updates fror older ones.
+        # So if any fail, we need to retry the import later. No exception should be handled.
         all_files = []
         base_url = "https://jvndb.jvn.jp/en/rss/years/jvndb_{year}.rdf"
         for year in range(2002, datetime.now().year + 1):