sambacc: return more correct type for ctdb params function

Signed-off-by: John Mulligan <[email protected]>

Author: phlogistonjohn

sambacc/config.py

@@ -303,7 +303,7 @@ def ctdb_smb_config(self) -> CTDBSambaConfig:
             raise ValueError("ctdb not supported in configuration")
         return CTDBSambaConfig()
 
-    def ctdb_config(self) -> dict[str, str]:
+    def ctdb_config(self) -> JSONData:
         """Common configuration of CTDB itself."""
         if not self.with_ctdb:
             return {}