Update module github.com/aws/aws-sdk-go to v1.45.20

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
github.com/aws/aws-sdk-go	require	patch	v1.45.19 -> v1.45.20

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Release Notes

aws/aws-sdk-go (github.com/aws/aws-sdk-go)

### [`v1.45.20`](https://togithub.com/aws/aws-sdk-go/blob/HEAD/CHANGELOG.md#Release-v14520-2023-10-02) [Compare Source](https://togithub.com/aws/aws-sdk-go/compare/v1.45.19...v1.45.20) \=== ##### Service Client Updates - `service/bedrock`: Updates service API, documentation, waiters, and paginators - `service/bedrock-runtime`: Updates service API and documentation - `service/ec2`: Updates service API - Introducing Amazon EC2 R7iz instances with 3.9 GHz sustained all-core turbo frequency and deliver up to 20% better performance than previous generation z1d instances. - `service/managedblockchain`: Updates service documentation - `service/rds`: Updates service API, documentation, waiters, paginators, and examples - Adds DefaultCertificateForNewLaunches field in the DescribeCertificates API response. - `service/sso`: Adds new service - Fix FIPS Endpoints in aws-us-gov. - `service/sts`: Updates service API and documentation - STS API updates for assumeRole - `service/transfer`: Updates service documentation - Documentation updates for AWS Transfer Family

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