Update generated code (#1964)

* update generated code

* Update changelogs

---------

Co-authored-by: Christophe Coevoet <[email protected]>

Author: async-aws-bot

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## NOT RELEASED
 
+### Added
+
+- AWS api-change: Added `us-isob-west-1` region
+
 ### Changed
 
 - Apply new CodingStandard from latest php-cs-fixer.

composer.json

@@ -38,7 +38,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "1.27-dev"
+            "dev-master": "1.28-dev"
         }
     }
 }

src/Sts/StsClient.php

@@ -397,6 +397,14 @@ protected function getEndpointMetadata(?string $region): array
                     'signService' => 'sts',
                     'signVersions' => ['v4'],
                 ];
+            case 'us-isob-east-1':
+            case 'us-isob-west-1':
+                return [
+                    'endpoint' => "https://sts.$region.sc2s.sgov.gov",
+                    'signRegion' => $region,
+                    'signService' => 'sts',
+                    'signVersions' => ['v4'],
+                ];
             case 'us-isof-east-1':
             case 'us-isof-south-1':
                 return [
@@ -412,13 +420,6 @@ protected function getEndpointMetadata(?string $region): array
                     'signService' => 'sts',
                     'signVersions' => ['v4'],
                 ];
-            case 'us-isob-east-1':
-                return [
-                    'endpoint' => 'https://sts.us-isob-east-1.sc2s.sgov.gov',
-                    'signRegion' => 'us-isob-east-1',
-                    'signService' => 'sts',
-                    'signVersions' => ['v4'],
-                ];
         }
 
         return [