Remove python 3.9 incompatible type hint

python 3.9 doesn't like:

def find_dict_in_list_by_key_value( ... ) -> dict | None:

Removed the type hint:

def find_dict_in_list_by_key_value( ... ):

plugins/modules/dcnm_vrf.py

@@ -659,9 +659,7 @@ def __init__(self, module):
         self.log.debug(msg)
 
     @staticmethod
-    def find_dict_in_list_by_key_value(
-        search: list, key: str, value: str
-    ) -> dict | None:
+    def find_dict_in_list_by_key_value(search: list, key: str, value: str):
         """
         # Summary