fix(fabric): update response json

Author: mattiasthalen

sqlmesh/core/engine_adapter/fabric.py

@@ -180,7 +180,9 @@ def _make_fabric_api_request_with_location(
 
             # Include response body if present
             if response.content:
-                result.update(response.json())
+                json_data = response.json()
+                if json_data:
+                    result.update(json_data)
 
             return result