Update to Node.js 20

[toritried]

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: bcomnes/deploy-to-neocities@v1. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/

[bcomnes]

Thanks, will do an update asap. Things will keep working for a bit.

[bcomnes]

Available in the v2 branch.