Update ember-cli-qunit to avoid issue with jQuery 3.x.
Update ember-cli-qunit to avoid issue with jQuery 3.x.

trentmwillis/ember-asset-loader,trentmwillis/ember-asset-loader,ember-engines/ember-asset-loader,ember-engines/ember-asset-loader,ember-engines/ember-asset-loader,trentmwillis/ember-asset-loader