Fix CSV timestamp output with multi-character delimiters - #1050

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683, cross-platform-actions/action@2d97d42e1972a17b045fd709a422f7e55a86230d, step-security/harden-runner@0080882f6c36860b6ba35c610c98ce87d4e2f26f. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/