Issue #3078671 by alexpott, Simon Peacock, greg.1.anderson, vuil, jungle, rodrigoaguilera, sam-elayyoub, mmjvb, karolrybak, catch: Pin behat/mink and behat/mink-selenium2-driver to use resolvable release

Issue #3078671 by Simon Peacock, greg.1.anderson, vuil, alexpott, jungle, rodrigoaguilera, sam-elayyoub, mmjvb, karolrybak: Pin behat/mink and behat/mink-selenium2-driver to use resolvable release