fix: reset cache if content bucket changes

Author: evakravi

src/sagemaker/jumpstart/utils.py

@@ -100,6 +100,7 @@ def get_jumpstart_content_bucket(
     accessors.JumpStartModelsAccessor.set_jumpstart_content_bucket(bucket_to_return)
 
     if bucket_to_return != old_content_bucket:
+        accessors.JumpStartModelsAccessor.reset_cache()
         for info_log in info_logs:
             constants.JUMPSTART_LOGGER.info(info_log)
     return bucket_to_return