Mark response actions as an experimental feature

docs/website/docs/dlt-ecosystem/verified-sources/rest_api.md

@@ -591,6 +591,10 @@ See the [incremental loading](../../general-usage/incremental-loading.md#increme
 
 The `response_actions` field in the endpoint configuration allows you to specify how to handle specific responses from the API based on status codes or content substrings. This is useful for handling edge cases like ignoring responses on specific conditions.
 
+:::caution Experimental Feature
+This is an experimental feature and may change in future releases.
+:::
+
 #### Example
 
 ```py