Update aws/aws-sdk-php requirement from ~3.321.11 to ~3.323.1

[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 3.323.1

• Aws\EC2 - Documentation updates for Amazon EC2.
• Aws\IoTDataPlane - Add v2 smoke tests and smithy smokeTests trait for SDK testing.

Commits

• 1b393c4 3.323.1 release
• 2050a3e Update models for release
• 7fa2abd enhacement: remove cloudsearch smoke test (#3009)
• 058611b 3.323.0 release
• 32dacad Update models for release
• bbe2a02 enhancement: remove smoke test for autoscaling (#3007)
• 0adb58b 3.322.10 release
• d7853fb Update models for release
• 0bd7513 3.322.9 release
• 42b6fba 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 | [< 3.186, > 3.185.18] | | aws/aws-sdk-php | [< 3.192, > 3.191.3] | | aws/aws-sdk-php | [>= 3.283.a, < 3.284] |

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