security/step-certificates: update to 0.23.2

This update removes the deprecated commands
step-awskms-init, step-cloudkms-init, step-pkcs11-init,
and step-yubikey-init. step and step-kms-plugin should
be used instead.

Changelog: https://github.com/smallstep/certificates/blob/3c76834/CHANGELOG.md

PR: 270298