Boto3

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* api-change:``medialive``: [``botocore``] MediaLive now supports passing through style data on WebVTT caption outputs.
* api-change:``databrew``: [``botocore``] This SDK release adds two new features: 1) Output to Native JDBC destinations and 2) Adding configurations to profile jobs
* api-change:``elbv2``: [``botocore``] Update elbv2 client to latest version
* api-change:``s3control``: [``botocore``] Documentation updates for Amazon S3-control
* api-change:``ec2``: [``botocore``] This release allows customers to assign prefixes to their elastic network interface and to reserve IP blocks in their subnet CIDRs. These reserved blocks can be used to assign prefixes to elastic network interfaces or be excluded from auto-assignment.
* api-change:``qldb``: [``botocore``] Amazon QLDB now supports ledgers encrypted with customer managed KMS keys. Changes in CreateLedger, UpdateLedger and DescribeLedger APIs to support the changes.

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* api-change:``kendra``: [``botocore``] Amazon Kendra now provides a data source connector for Amazon WorkDocs. For more information, see https://docs.aws.amazon.com/kendra/latest/dg/data-source-workdocs.html
* api-change:``proton``: [``botocore``] Documentation updates for AWS Proton
* api-change:``iam``: [``botocore``] Documentation updates for AWS Identity and Access Management (IAM).
* api-change:``rds``: [``botocore``] Adds the OriginalSnapshotCreateTime field to the DBSnapshot response object. This field timestamps the underlying data of a snapshot and doesn't change when the snapshot is copied.
* api-change:``elbv2``: [``botocore``] Update elbv2 client to latest version
* api-change:``lambda``: [``botocore``] New ResourceConflictException error code for PutFunctionEventInvokeConfig, UpdateFunctionEventInvokeConfig, and DeleteFunctionEventInvokeConfig operations.
* api-change:``codebuild``: [``botocore``] AWS CodeBuild now allows you to set the access permissions for build artifacts, project artifacts, and log files that are uploaded to an Amazon S3 bucket that is owned by another account.
* api-change:``personalize``: [``botocore``] My AWS Service (placeholder) - Making minProvisionedTPS an optional parameter when creating a campaign. If not provided, it defaults to 1.
* api-change:``emr``: [``botocore``] Update emr client to latest version

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* api-change:``compute-optimizer``: [``botocore``] Documentation updates for Compute Optimizer
* api-change:``ec2``: [``botocore``] Added idempotency to the CreateVolume API using the ClientToken request parameter

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* api-change:``imagebuilder``: [``botocore``] Documentation updates for reversal of default value for additional instance configuration SSM switch, plus improved descriptions for semantic versioning.
* api-change:``directconnect``: [``botocore``] Documentation updates for directconnect
* api-change:``health``: [``botocore``] In the Health API, the maximum number of entities for the EventFilter and EntityFilter data types has changed from 100 to 99. This change is related to an internal optimization of the AWS Health service.
* api-change:``robomaker``: [``botocore``] This release allows customers to create a new version of WorldTemplates with support for Doors.
* api-change:``location``: [``botocore``] Add five new API operations: UpdateGeofenceCollection, UpdateMap, UpdatePlaceIndex, UpdateRouteCalculator, UpdateTracker.
* api-change:``emr-containers``: [``botocore``] Updated DescribeManagedEndpoint and ListManagedEndpoints to return failureReason and stateDetails in API response.

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* api-change:``appintegrations``: [``botocore``] Documentation update for AppIntegrations Service
* api-change:``chime``: [``botocore``] This SDK release adds Account Status as one of the attributes in Account API response
* api-change:``auditmanager``: [``botocore``] This release relaxes the S3 URL character restrictions in AWS Audit Manager. Regex patterns have been updated for the following attributes: s3RelativePath, destination, and s3ResourcePath. 'AWS' terms have also been replaced with entities to align with China Rebrand documentation efforts.

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* api-change:``ec2``: [``botocore``] This feature enables customers to specify weekly recurring time window(s) for scheduled events that reboot, stop or terminate EC2 instances.
* api-change:``cognito-idp``: [``botocore``] Documentation updates for cognito-idp
* api-change:``ecs``: [``botocore``] Documentation updates for support of awsvpc mode on Windows.
* api-change:``lex-models``: [``botocore``] Lex now supports the en-IN locale
* api-change:``iotsitewise``: [``botocore``] Update the default endpoint for the APIs used to manage asset models, assets, gateways, tags, and account configurations. If you have firewalls with strict egress rules, configure the rules to grant you access to api.iotsitewise.[region].amazonaws.com or api.iotsitewise.[cn-region].amazonaws.com.cn.
* feature:Python: Drop support for Python 2.7
* feature:Python: [``botocore``] Dropped support for Python 2.7