fix: datetime.now → datetime.datetime.now

Author: LeafCreeper

main.py

@@ -285,7 +285,7 @@ def run():
     # Refresh the semester catalog: run on the 5th and 25th of each month,
     # or immediately if the database has no catalog data yet.
     has_catalog = bool(db.list_all_courses())
-    today = datetime.now().day
+    today = datetime.datetime.now().day
     if not has_catalog or today in (5, 25):
         _crawl_semester_catalog(client, db, reporter)
     else: