Update puma dependency to version 1.6.0
Update puma dependency to version 1.6.0

jamiekelly/adopt-a-hydrant,jasnow/adopt-a-hydrant,friendlycode/adopt-a-hydrant,Stackato-Apps/adopt-a-hydrant,CostantinB/adopt-a-hydrant,HackMichiana/adopt-a-bus-stop,t-pfaff/adopt-a-hydrant,openshift-quickstart/adopt-a-hydrant-openshift-quickstart,codefornigeria/adopt-a-hydrant,codefornigeria/adopt-a-hydrant,codeforanchorage/adopt-a-hydrant,t-pfaff/adopt-a-hydrant,billyfung/van-racks,openshift-quickstart/adopt-a-hydrant-openshift-quickstart,0111001101111010/adopt-a-spot-odu,codeforamerica/adopt-a-hydrant,0111001101111010/adopt-a-spot-odu,eebbesen/adopt-a-tree,OpenTwinCities/adopt-a-tree,HackMichiana/adopt-a-bus-stop,CostantinB/adopt-a-hydrant,jamiekelly/adopt-a-hydrant,code4sac/adopt-a-light,baraka101/dar-adopt-a-mtaro,Stackato-Apps/adopt-a-hydrant,code4sac/adopt-a-light,billyfung/van-racks,akintoey/adopt-a-hydrant,voyera/adopt-a-hydrant,t-pfaff/adopt-a-hydrant,codeforsavannah/adopt-a-garden,OpenTwinCities/adopt-a-tree,codeforamerica/adopt-a-hydrant,openshift-quickstart/adopt-a-hydrant-openshift-quickstart,eebbesen/adopt-a-tree,baraka101/dar-adopt-a-mtaro,baraka101/dar-adopt-a-mtaro,OpenTwinCities/adopt-a-tree,eebbesen/adopt-a-tree,codeforamerica/adopt-a-hydrant,akintoey/adopt-a-hydrant,akintoey/adopt-a-hydrant,jasnow/adopt-a-hydrant,codeforboston/adopt-a-hydrant,codeforsavannah/adopt-a-garden,voyera/adopt-a-hydrant,Stackato-Apps/adopt-a-hydrant,Bryanprz/adopt-a-street,jasnow/adopt-a-hydrant,jamiekelly/adopt-a-hydrant,voyera/adopt-a-hydrant,OpenTwinCities/adopt-a-tree,codeforboston/adopt-a-hydrant,codeforanchorage/adopt-a-hydrant,friendlycode/adopt-a-hydrant,Bryanprz/adopt-a-street,billyfung/van-racks,friendlycode/adopt-a-hydrant,CostantinB/adopt-a-hydrant,Bryanprz/adopt-a-street,codefornigeria/adopt-a-hydrant