Downgrade css-loader requirement
Downgrade css-loader requirement

Seems like a huge performance regression was introduced a long time ago
with v0.15.0.

https://github.com/webpack-contrib/css-loader/issues/124

I just confirmed it. With the latest release of css-loader, a test file
of mine took 30 seconds to compile. After I downgraded to 0.14.5, that
time was reduce to 12 seconds.

JeffreyWay/laravel-mix