[pom] Update logback to 1.1.8
[pom] Update logback to 1.1.8

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