fix: wrong typing in DB columns (#51)

* fix: wrong typing in DB columns
* fix: update
* fix: migrations
* chore: lint

models.py

@@ -17,10 +17,8 @@ class Card(BaseModel):
     uid: str
     external_id: str
     counter: int
-    # TODO: database column is TEXT should be INT
-    tx_limit: str
-    # TODO: database column is TEXT should be INT
-    daily_limit: str
+    tx_limit: int
+    daily_limit: int
     enable: bool
     k0: str
     k1: str