fix(build) Replace deleteSync, which was removed in v6 of del lib

[wkania]

I'm back and it looks like the following command build_and_test does not work at least since PR

The runner use older version of this lib. This require some sync:

 Starting build.
Finished build.
/home/runner/work/highlight.js/highlight.js/pr/tools/lib/makestuff.js:9
  await del.default([directory]);
                   ^

TypeError: del.default is not a function
    at clean (/home/runner/work/highlight.js/highlight.js/pr/tools/lib/makestuff.js:9:20)
    at async doTarget (/home/runner/work/highlight.js/highlight.js/pr/tools/build.js:89:3)

docker compose exec web npm run build_and_test

> [email protected] build_and_test
> npm run build && npm run test


> [email protected] build
> node ./tools/build.js -t node

Starting build.
Finished build.
/usr/src/service/tools/lib/makestuff.js:9
  del.deleteSync([directory]);
      ^

TypeError: del.deleteSync is not a function
    at clean (/usr/src/service/tools/lib/makestuff.js:9:7)
    at async doTarget (/usr/src/service/tools/build.js:89:3)

Checklist

• ☑️ Fixed docker compose exec web npm run build_and_test
• ☑️ Updated the changelog at CHANGES.md

[joshgoebel]

Working here without issue.

❯ npm list | grep del
├── [email protected]
❯ npm run build_and_test | tail -n10
(node:33088) [DEP0040] DeprecationWarning: The `punycode` module is deprecated. Please use a userland alternative instead.
(Use `node --trace-deprecation ...` to show where the warning was created)
  zephir
    ✔ should markup default

  robots-txt
    ✔ should markup sample


  1580 passing (1s)
  3 pending

[joshgoebel]

Closing for inactivity.