Pass scalar overrides explicitly to keep lazy type loading lazy on graphql-php >= 15.31 - #2772

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, codecov/codecov-action@v2. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/