Fix orchestra/testbench 3.0.x-dev requires laravel/framework 5.0.*
Fix orchestra/testbench 3.0.x-dev requires laravel/framework 5.0.*

Travis CI Test Gives Error:
orchestra/testbench 3.0.x-dev requires laravel/framework 5.0.*

When test on any version higher than 7.1
duxet/laravel-rethinkdb