bumping version from 3 to 4
bumping version from 3 to 4

mozilla-releng/services,andrei987/services,garbas/mozilla-releng-services,lundjordan/services,garbas/mozilla-releng-services,andrei987/services,mozilla-releng/services,srfraser/services,srfraser/services,lundjordan/services,mozilla-releng/services,srfraser/services,srfraser/services,andrei987/services,La0/mozilla-relengapi,La0/mozilla-relengapi,lundjordan/services,garbas/mozilla-releng-services,andrei987/services,mozilla-releng/services,La0/mozilla-relengapi,garbas/mozilla-releng-services,lundjordan/services,La0/mozilla-relengapi