Use debug-level messages for generating anonymous users (#1254)

jupyter_server/auth/identity.py

@@ -475,7 +475,7 @@ def generate_anonymous_user(self, handler: JupyterHandler) -> User:
         name = display_name = f"Anonymous {moon}"
         initials = f"A{moon[0]}"
         color = None
-        handler.log.info(f"Generating new user for token-authenticated request: {user_id}")
+        handler.log.debug(f"Generating new user for token-authenticated request: {user_id}")
         return User(user_id, name, display_name, initials, None, color)
 
     def should_check_origin(self, handler: JupyterHandler) -> bool: