Update the sync function to take raw input, not json

Change-Id: I29b9279d23dfa8333d4ef07fe2512cc5abddae9a
Reviewed-on: https://review.couchbase.org/c/CapellaRESTAPIs/+/242794
Tested-by: Dragos Petru Taraban <dragos.petru@couchbase.com>
Reviewed-by: Bo-Chun Wang <bo-chun.wang@couchbase.com>

Author: DragosPetruTaraban

capella/dedicated/CapellaAPI.py

@@ -1020,7 +1020,7 @@ def update_sync_function_sgw(self, tenant_id, project_id, cluster_id, backend_id
         url = '{}/v2/organizations/{}/projects/{}/clusters/{}/backends/{}/databases/{}/sync' \
               .format(self.internal_url, tenant_id, project_id, cluster_id, backend_id, db_name)
         resp = self.do_internal_request(url, method="PUT",
-                                        params=json.dumps(config))
+                                        params=config)
         return resp
 
     def add_app_role_sgw(self, tenant_id, project_id, cluster_id, backend_id, db_name, config):