Update aws/aws-sdk-php requirement from ~3.298.7 to ~3.320.2

[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 3.320.2

• Aws\SageMaker - Introduce Endpoint and EndpointConfig Arns in sagemaker:ListPipelineExecutionSteps API response
• Aws\QuickSight - Amazon QuickSight launches Customer Managed Key (CMK) encryption for Data Source metadata
• Aws\Batch - Improvements of integration between AWS Batch and EC2.
• Aws\SESv2 - Marking use case description field of account details as deprecated.
• Aws\Inspector2 - Update the correct format of key and values for resource tags

Commits

• dbae075 3.320.2 release
• b430bd6 Update models for release
• 653549a 3.320.1 release
• eea129b Update models for release
• d0e5f0d Add missing PHPDoc annotation for Doctrine Cache implementations (#2811)
• 8dd47fd 3.320.0 release
• e3cb3b4 Update models for release
• ba1f0b7 feat: add deprecation notice (#2951)
• eaa1f85 Add options to createPresignedRequest method (#2849)
• b39a567 3.319.4 release
• Additional commits viewable in compare view

Most Recent Ignore Conditions Applied to This Pull Request

| Dependency Name | Ignore Conditions | | --- | --- | | aws/aws-sdk-php | [>= 3.296.a, < 3.297] | | aws/aws-sdk-php | [>= 3.301.a, < 3.302] | | aws/aws-sdk-php | [>= 3.307.a, < 3.308] |

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