Migrate `providerlint` AWS-specific passes to `aws-sdk-go-v2`

[ewbankkit]

% grep aws/aws-sdk-go .ci/providerlint/passes/**/*.go
.ci/providerlint/passes/AWSAT003/AWSAT003.go:   "github.com/aws/aws-sdk-go/aws/endpoints"
.ci/providerlint/passes/AWSAT005/AWSAT005.go:   "github.com/aws/aws-sdk-go/aws/endpoints"
.ci/providerlint/passes/AWSAT006/AWSAT006.go:   "github.com/aws/aws-sdk-go/aws/endpoints"

Migrate these to AWS SDK for Go v2. Relates https://github.com/hashicorp/terraform-provider-aws/issues/32976.

[github-actions[bot]]

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