Gemfile in mixlib-install-3.12.11 vs Gemfile in mixlib-install-3.12.15

@@ -10,9 +10,10 @@
   gem "vcr"
   gem "webrick"
   gem "webmock", "~> 3.4"
   gem "aruba", "~> 0.14"
   gem "cucumber", "~> 1.3.20"
+  gem "contracts", "~> 0.16.0" # this entry can go away when ruby < 3 support is gone
   if RUBY_VERSION < "2.5.0"
     gem "climate_control", "= 0.1.0"
   else
     gem "climate_control", "~> 1.0"
   end