fix pylint warnings

Author: ericvergnaud

tests/unit/conftest.py

@@ -175,7 +175,7 @@ def inner(cb, **replace) -> RuntimeContext:
 def acc_client():
     acc = create_autospec(AccountClient)
     acc.config = Config(host="https://accounts.cloud.databricks.com", account_id="123", token="123")
-    acc.asset_not_called()
+    acc.assert_not_called()
     return acc