[pom] Update logback to 1.1.7
[pom] Update logback to 1.1.7

dblock/waffle,AriSuutariST/waffle,Waffle/waffle,AriSuutariST/waffle,dblock/waffle,hazendaz/waffle,Waffle/waffle,hazendaz/waffle,dblock/waffle,AriSuutariST/waffle,dblock/waffle,AriSuutariST/waffle,hazendaz/waffle,Waffle/waffle