Fix F402: rename loop var 'table' to 'tbl' to avoid shadowing SQLAlchemy table import

The for loop variable 'table' shadows the imported SQLAlchemy table()
from line 8. Ruff rule F402 fires when a loop variable shadows an import.
Rename to 'tbl'.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

tests/test_encrypted_json.py

@@ -18,8 +18,8 @@ from cartsnitch_api.models.user import User, UserStoreAccount
 def engine():
     eng = create_engine("sqlite:///:memory:")
 
-    for table in Base.metadata.tables.values():
-        for col in table.columns.values():
+    for tbl in Base.metadata.tables.values():
+        for col in tbl.columns.values():
             sd = col.server_default
             if sd is not None:
                 expr_str = str(sd.expression).lower()