Update dependency boto3 to v1.35.28

This MR contains the following updates:

Package	Update	Change
boto3	patch	==1.35.27 -> ==1.35.28

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Release Notes

boto/boto3 (boto3)

v1.35.28

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• api-change:chatbot: [botocore] Return State and StateReason fields for Chatbot Channel Configurations.
• api-change:lambda: [botocore] Reverting Lambda resource-based policy and block public access APIs.
• api-change:organizations: [botocore] Add support for policy operations on the CHATBOT_POLICY policy type.
• api-change:pcs: [botocore] AWS PCS API documentation - Edited the description of the iamInstanceProfileArn parameter of the CreateComputeNodeGroup and UpdateComputeNodeGroup actions; edited the description of the SlurmCustomSetting data type to list the supported parameters for clusters and compute node groups.
• api-change:rds-data: [botocore] Documentation update for RDS Data API to reflect support for Aurora MySQL Serverless v2 and Provisioned DB clusters.
• api-change:sagemaker: [botocore] Adding TagPropagation attribute to Sagemaker API

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