Fix types in Card resource (#317)

* fix card fields

* versions

Author: rogelioLpz

cuenca/resources/cards.py

@@ -31,7 +31,8 @@ class Card(Retrievable, Queryable, Creatable, Updateable):
     issuer: CardIssuer
     funding_type: CardFundingType
     pin_attempts_failed: Optional[int] = None
-    card_holder_user_id: Optional[int] = None
+    platform_id: Optional[str] = None
+    card_holder_user_id: Optional[str] = None
 
     @property
     def last_4_digits(self):

cuenca/version.py

@@ -1,3 +1,3 @@
-__version__ = '0.14.4'
+__version__ = '0.14.5'
 CLIENT_VERSION = __version__
 API_VERSION = '2020-03-19'