fix(manual-api): allow multiple overrides for lists (rates_import_override, rates_export_override) - #4658

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/cache@v3, actions/checkout@v4, actions/setup-python@v4, pre-commit-ci/lite-action@v1.1.0. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/