feat(clients): update client endpoints as of 2023-04-03

Author: awstools

codegen/smithy-aws-typescript-codegen/src/main/resources/software/amazon/smithy/aws/typescript/codegen/endpoints.json

@@ -1995,6 +1995,8 @@
             "eu-north-1": {},
             "eu-west-1": {},
             "eu-west-2": {},
+            "eu-west-3": {},
+            "sa-east-1": {},
             "us-east-1": {},
             "us-east-2": {},
             "us-west-2": {}