Update OpenPhish feed URL to new GitHub location (#1252)

Author: drego85

plugins/feeds/public/openphish.py

@@ -8,7 +8,7 @@
 
 class OpenPhish(task.FeedTask):
     # set default values for feed
-    _SOURCE: ClassVar["str"] = "https://openphish.com/feed.txt"
+    _SOURCE: ClassVar["str"] = "https://raw.githubusercontent.com/openphish/public_feed/refs/heads/main/feed.txt"
     _defaults = {
         "frequency": timedelta(hours=1),
         "name": "OpenPhish",