Fix mypy error

Author: tolik0

airbyte_cdk/sources/declarative/incremental/concurrent_partition_cursor.py

@@ -225,7 +225,7 @@ def _to_partition_key(self, partition: Mapping[str, Any]) -> str:
     def _to_dict(self, partition_key: str) -> Mapping[str, Any]:
         return self._partition_serializer.to_partition(partition_key)
 
-    def _create_cursor(self, cursor_state: Any) -> DeclarativeCursor:
+    def _create_cursor(self, cursor_state: Any) -> Cursor:
         cursor = self._cursor_factory.create(stream_state=cursor_state)
         return cursor