fix(deps): update dependency aws-sdk to v2.1621.0

This MR contains the following updates:

Package	Type	Update	Change
aws-sdk	dependencies	minor	2.1620.0 -> 2.1621.0

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Release Notes

aws/aws-sdk-js (aws-sdk)

v2.1621.0

Compare Source

• feature: BedrockAgentRuntime: Updating Bedrock Knowledge Base Metadata & Filters feature with two new filters listContains and stringContains
• feature: CodeBuild: CodeBuild Reserved Capacity VPC Support
• feature: DataSync: Task executions now display a CANCELLING status when an execution is in the process of being cancelled.
• feature: Grafana: This release adds new ServiceAccount and ServiceAccountToken APIs.
• feature: MedicalImaging: Added support for importing medical imaging data from Amazon S3 buckets across accounts and regions.

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