Update pylint/message/message_definition_store.py

Co-authored-by: Pierre Sassoulas <pierre.sassoulas@gmail.com>

pylint/message/message_definition_store.py

@@ -52,7 +52,7 @@ def register_message(self, message: MessageDefinition) -> None:
     # and the arguments are relatively small in size we do not run the
     # risk of creating a large memory leak.
     # See discussion in: https://github.com/PyCQA/pylint/pull/5673
-    @functools.lru_cache(maxsize=400)
+    @functools.lru_cache(maxsize=None)  # pylint: disable=cache-max-size-none
     def get_message_definitions(self, msgid_or_symbol: str) -> List[MessageDefinition]:
         """Returns the Message definition for either a numeric or symbolic id.