Draft: update nodejs from 14 to 18

[hrajchert]

This PR updates nodejs and other dependencies to avoid hanging for a long time while doing npm ci. It is a Draft until the following issues are fixed:

• The blockly toolbar helper is broken. Whenever a block is selected, the toolbar should change to show the types of the holes in the block.
• Fix converting from Marlowe to Blockly and viceversa
• Remove any deprecated Blockly code
• Fix package.json to nix
• Make a deep test. I've tried (and fixed) numerous things, including loading and saving from Gists, but a deep check should be made.

Pre-submit checklist:

• Branch
  • [ ] Tests are provided (if possible)
  • [ ] Commit sequence broadly makes sense
  • [ ] Key commits have useful messages
  • [ ] Relevant tickets are mentioned in commit messages
  • [ ] Formatting, materialized Nix files, PNG optimization, etc. are updated
• PR
  • [ ] Self-reviewed the diff
  • [ ] Useful pull request description
  • [ ] Reviewer requested