Update endpoints model

Author: AWS SDK for Go v2 automation user

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

@@ -1767,10 +1767,13 @@
       "apprunner" : {
         "endpoints" : {
           "ap-northeast-1" : { },
+          "ap-south-1" : { },
           "ap-southeast-1" : { },
           "ap-southeast-2" : { },
           "eu-central-1" : { },
           "eu-west-1" : { },
+          "eu-west-2" : { },
+          "eu-west-3" : { },
           "fips-us-east-1" : {
             "credentialScope" : {
               "region" : "us-east-1"