chore(deps-dev): bump @aws-sdk/client-rds from 3.731.1 to 3.821.0 (#476)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]