[test] Fix running tests on Windows

[joshwooding]

• I have followed (at least) the PR section of the contributing guide.

Spent the last couple of days debugging this problem with @oliviertassinari 😭
Seems to have been caused by dc4d1eb#diff-b9cfc7f2cdf78a7f4b91a753d10865a2L107

node_modules\@babel\runtime\helpers\typeof.js:8
  if (typeof Symbol === "function" && (0, _typeof4.default)(Symbol.iterator) ===
 "symbol") {
                                                           ^

TypeError: (0 , _typeof4.default) is not a function

• Ignore @babel/runtime in babel.config.js