regenerate package-lock.json

[dotlambda]

Otherwise installation fails with

npm ERR! request to https://registry.npmjs.org/url-join failed: cache mode is 'only-if-cached' but no cached response is available.

Relevant issues

Contributor checklist

• [ ] Provide tests for the changes (unless documentation-only)
• [ ] Documented any new features, CLI switches, etc. (if applicable)
  • [ ] Server --help output
  • [ ] README.md
  • [ ] doc/http-server.1 (use the same format as other entries)
• [x] The pull request is being made against the master branch

Maintainer checklist

• [ ] Assign a version triage tag
• [ ] Approve tests if applicable