Update dependency botocore to v1.27.6

This MR contains the following updates:

Package	Type	Update	Change
botocore	ironbank-pypi	patch	1.27.5 -> 1.27.6

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Release Notes

boto/botocore

v1.27.6

Compare Source

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• api-change:chime-sdk-meetings: Adds support for live transcription in AWS GovCloud (US) Regions.

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