ci(release): gate every tag consumer on one certified-commit check - #14

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@11d5960a326750d5838078e36cf38b85af677262, gitleaks/gitleaks-action@dcedce43c6f43de0b836d1fe38946645c9c638dc. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/