chore: update dependencies

[j9t]

Bumped dependencies by some simple npm audit fix. Though according to npm, this fixed 12 of 15 vulnerabilities, 3 persist; left it there for this update.

[j9t]

Btw, when testing, I ran into some issues with ESLint. If not already in progress or pointed out elsewhere, should be worth looking into. html-minifier is using a now deprecated way of configuring ESLint; still, the current issues may be treatable by adding and adjusting

"parserOptions": {
  "ecmaVersion": "latest"
},

in the config.)