chore(deps): update actions/setup-node action to v7 - #345

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744, actions/upload-artifact@b4b15b8c7c6ac21ea08fcf65892d2ee8f75cf882. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/