Bump aws/aws-sdk-php from 3.316.4 to 3.321.11

Bumps [aws/aws-sdk-php](https://github.com/aws/aws-sdk-php) from 3.316.4 to 3.321.11.
- [Release notes](https://github.com/aws/aws-sdk-php/releases)
- [Commits](aws/aws-sdk-php@3.316.4...3.321.11)

---
updated-dependencies:
- dependency-name: aws/aws-sdk-php
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

composer.json

@@ -21,7 +21,7 @@
     },
     "require-dev": {
         "async-aws/dynamo-db": "^3.2",
-        "aws/aws-sdk-php": "3.316.4",
+        "aws/aws-sdk-php": "3.321.11",
         "fakerphp/faker": "^1.23",
         "phpstan/extension-installer": "^1.4",
         "phpstan/phpstan": "^1.11",