Bump github.com/aws/aws-sdk-go-v2/service/secretsmanager from 1.34.11 to 1.34.12 in /scripts/internal/get-testing-ci-user-creds

Bump github.com/aws/aws-sdk-go-v2/service/secretsmanager from 1.34.11 to 1.34.12 in /scripts/internal/get-testing-ci-user-creds #12591