Update dependency boto3 to v1.20.49 (develop)

This MR contains the following updates:

Package	Type	Update	Change
boto3	dependencies	patch	==1.20.47 -> ==1.20.49

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Release Notes

boto/boto3

v1.20.49

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• api-change:athena: [botocore] You can now optionally specify the account ID that you expect to be the owner of your query results output location bucket in Athena. If the account ID of the query results bucket owner does not match the specified account ID, attempts to output to the bucket will fail with an S3 permissions error.
• api-change:rds: [botocore] updates for RDS Custom for Oracle 12.1 support
• api-change:lakeformation: [botocore] Add support for calling Update Table Objects without a TransactionId.

v1.20.48

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• api-change:ec2: [botocore] adds support for AMIs in Recycle Bin
• api-change:robomaker: [botocore] The release deprecates the use various APIs of RoboMaker Deployment Service in favor of AWS IoT GreenGrass v2.0.
• api-change:meteringmarketplace: [botocore] Add CustomerAWSAccountId to ResolveCustomer API response and increase UsageAllocation limit to 2500.
• api-change:rbin: [botocore] Add EC2 Image recycle bin support.

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