Update dependency aws/aws-sdk-php to v3.344.6

This MR contains the following updates:

Package	Type	Update	Change
aws/aws-sdk-php (source)	require	patch	3.344.5 -> 3.344.6

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Release Notes

aws/aws-sdk-php (aws/aws-sdk-php)

v3.344.6

Compare Source

• Aws\KMS - AWS KMS announces the support of ML-DSA key pairs that creates post-quantum safe digital signatures.
• Aws\ConnectCampaignsV2 - Added PutInstanceCommunicationLimits and GetInstanceCommunicationLimits APIs
• Aws\IoTFleetWise - Add new status READY_FOR_CHECKIN used for vehicle synchronisation
• Aws\APIGateway - Documentation updates for Amazon API Gateway
• Aws\PCS - Fixed regex patterns for ARN fields.
• Aws\ApiGatewayV2 - Documentation updates for Amazon API Gateway
• Aws\ECS - This Amazon ECS release supports updating the capacityProviderStrategy parameter in update-service.
• Aws\EMRServerless - This release adds support for retrieval of the optional executionIamPolicy field in the GetJobRun API response.

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