Update gettext gem to 3.1.1
Update listen gem to 2.6.0
Update open4 gem to 1.3.2
Update rspec-mocks gem to 2.14.6
Update parser gem to 2.1.5
Update bcrypt-ruby gem to 3.1.5
Update devise gem to 3.2.3
Update guard-rspec gem to 4.2.7