This updates several `devDependencies` to their latest versions:
- `autoprefixer` (`10.4.20`)
- `cssnano` (`7.0.6`)
- `grunt-contrib-qunit` (`10.1.1`)
- `grunt-webpack` (`7.0.0`)
- `postcss` (`8.4.47`)
- `qunit` (`2.22.0`)
- `sass` (`1.79.4`)
- `uuid` (`10.0.0`)
- `wait-on` (18.0.1`)
Also included are two minor updates to bundled dependencies:
- `json2php` (`0.0.9`)
- `wicg-inert` (`3.1.3`).
After applying these updates, `npm audit fix` and `grunt precommit:css` were run.
See #62137.
Built from https://develop.svn.wordpress.org/trunk@59135
git-svn-id: http://core.svn.wordpress.org/trunk@58531 1a063a9b-81f0-0310-95a4-ce76da25c4cd
