allow puppetlabs/apt 8.x in acceptance tests

Author: bastelfreak

spec/acceptance/class_spec.rb

@@ -7,7 +7,7 @@
     install_module_from_forge('puppet-epel', '>= 3.0.0 < 4.0.0')
   when 'Debian'
     pkg_cmd = 'dpkg -s nodejs | grep "^Maintainer"'
-    install_module_from_forge('puppetlabs-apt', '>= 4.4.0 < 8.0.0')
+    install_module_from_forge('puppetlabs-apt', '>= 4.4.0 < 9.0.0')
   end
 
   context 'default parameters' do