Build: Update dev dependencies (eslint, rollup, grunt, nyc)

No significant difference in the output, except a minor whitespace
improvement somewhere in Babel's helper functions.

```
--- qunit/qunit-main-branch.js
+++ qunit/qunit.js
@@ -37,7 +37,7 @@
   function _createForOfIteratorHelper(r, e) {
     var t = "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"];
     if (!t) {
-      if (Array.isArray(r) || (t = _unsupportedIterableToArray(r)) || e  ) {
+      if (Array.isArray(r) || (t = _unsupportedIterableToArray(r)) || e) {
         t && (r = t);
```

rollup/plugin-commonjs
* https://github.com/rollup/plugins/blob/commonjs-v26.0.1/packages/commonjs/CHANGELOG.md
* Major upgrade of `glob` which no longer sorts file order.

eslint-plugin-compat
* https://github.com/amilajack/eslint-plugin-compat/releases
* Require ESLint 8+, Node.js 18+.

eslint-plugin-markdown
* https://github.com/eslint/eslint-plugin-markdown/blob/v5.1.0/CHANGELOG.md
* Require ESLint 8+, Node.js 18+.
* Change mapping code block language to file extension.

eslint-plugin-n
* Can't do major upgrade yet,
  because eslint-config-semistandard requires eslint-plugin-n 15.x.

grunt-contrib-connect
* https://github.com/gruntjs/grunt-contrib-connect/blob/v5.0.0/CHANGELOG
* Fix CVE in "ws" via node-http2. GHSA-3h5v-q93c-6h6q

nyc:
* https://github.com/istanbuljs/nyc/blob/nyc-v17.0.0/CHANGELOG.md
* Require Node.js 18+