Update dependency boto3 to v1.38.20

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
boto3	==1.38.18 -> ==1.38.20

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Release Notes

boto/boto3 (boto3)

v1.38.20

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• api-change:datasync: [botocore] Remove Discovery APIs from the DataSync service
• api-change:ec2: [botocore] This release expands the ModifyInstanceMaintenanceOptions API to enable or disable instance migration during customer-initiated reboots for EC2 Scheduled Reboot Events.
• api-change:glue: [botocore] Enhanced AWS Glue ListConnectionTypes API Model with additional metadata fields.
• api-change:inspector2: [botocore] This release adds GetClustersForImage API and filter updates as part of the mapping of container images to running containers feature.
• api-change:oam: [botocore] Add IncludeTags field to GetLink, GetSink and UpdateLink API
• api-change:privatenetworks: [botocore] The privatenetworks client has been removed following the deprecation of the service.
• api-change:rds: [botocore] This release introduces the new DescribeDBMajorEngineVersions API for describing the properties of specific major versions of database engines.

v1.38.19

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• api-change:dsql: [botocore] CreateMultiRegionCluster and DeleteMultiRegionCluster APIs removed
• api-change:ec2: [botocore] This release includes new APIs for System Integrity Protection (SIP) configuration and automated root volume ownership delegation for EC2 Mac instances.
• api-change:mediapackagev2: [botocore] This release adds support for DVB-DASH, EBU-TT-D subtitle format, and non-compacted manifests for DASH in MediaPackage v2 Origin Endpoints.

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