Updated add'l mixlib-install version reference to 3.3.1
Updated add'l mixlib-install version reference to 3.3.1

Signed-off-by: Charlie Roffe <d8cd10b920dcbdb5163ca0185e402357bc27c265@roffe.net>

chef-cookbooks/chef_client_updater,chef-cookbooks/chef_client_updater