After updating to Laravel 8 I suddenly had my test suite failing because telescope would not be disabled properly by `phpunit.xml` anymore.
This changes fixed my test suite.
I've also created a clean Laravel 8 project and added some tests to demonstrate the issue:
https://github.com/hettiger/laravel-env-demo/commit/908d3405b84e769c12d296e98bef1ca567127254
Maybe this needs to be addressed in PHPUnit. However I'm adding this workaround here because it's a viable solution IMHO.
Maybe should add a note on this in the docs and be done with it…?
