fix(datasets): make connection config key hashable

Signed-off-by: Deepyaman Datta <[email protected]>

kedro-datasets/kedro_datasets/ibis/table_dataset.py

@@ -1,6 +1,7 @@
 """Provide data loading and saving functionality for Ibis's backends."""
 from __future__ import annotations
 
+import json
 from copy import deepcopy
 from typing import TYPE_CHECKING, Any, ClassVar
 
@@ -121,7 +122,7 @@ def __init__(  # noqa: PLR0913
     @property
     def connection(self) -> BaseBackend:
         cls = type(self)
-        key = tuple(sorted(self._connection_config.items()))
+        key = json.dumps(self._connection_config, sort_keys=True)
         if key not in cls._connections:
             import ibis