fix: ensure ab_internal_sl property always returns int

Co-Authored-By: Aaron <AJ> Steers <[email protected]>

Author: devin-ai-integration[bot]

airbyte_cdk/qa/connector.py

@@ -234,7 +234,8 @@ def ab_internal_sl(self) -> int:
             int: The ab_internal_sl of the connector, or 0 if it can't be determined
         """
         if self.metadata:
-            return self.metadata.get("data", {}).get("ab_internal", {}).get("sl", 0)
+            sl_value = self.metadata.get("data", {}).get("ab_internal", {}).get("sl", 0)
+            return int(sl_value) if sl_value is not None else 0
         return 0
 
     @property