Update aws/aws-sdk-php requirement from ~3.321.11 to ~3.323.4

[dependabot[bot]]

Updates the requirements on aws/aws-sdk-php to permit the latest version.

Release notes

Sourced from aws/aws-sdk-php's releases.

Version 3.323.4

• Aws\CodePipeline - AWS CodePipeline introduces a Compute category

Commits

• e66ee02 3.323.4 release
• 183e6d2 Update models for release
• 9dec2a6 3.323.3 release
• a0e2efe Update models for release
• 045a2bc adding return annotations to supress warnings (#3011)
• fd017c3 chore: remove references to TranscribeStreaming (#3010)
• 030b933 3.323.2 release
• a9d681e Update models for release
• 1b393c4 3.323.1 release
• 2050a3e Update models for release
• Additional commits viewable in compare view

Most Recent Ignore Conditions Applied to This Pull Request

| Dependency Name | Ignore Conditions | | --- | --- | | aws/aws-sdk-php | [>= 3.307.a, < 3.308] | | aws/aws-sdk-php | [>= 3.324.a, < 3.325] |

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[mikelittle]

@dependabot ignore this minor version

[dependabot[bot]]

OK, I won't notify you about version 3.323.x again, unless you re-open this PR.