Updating dependencies

(cherry picked from commit 9a323928da4a517b26ff53b622a9eb5ac546f9c6)
Updating dependencies to reflect Mink 1.6 release

(cherry picked from commit 23e86832dbba3e38473fff44eaffe494a0585f9d)
Due Behat/Mink#603 the `waitFor` method was waiting 1000 times longer

(cherry picked from commit fb003f41ae13436f7605a0fa3d8e82c2e4895732)