Make sure we have 13.3 for apt_preference

Signed-off-by: Tim Smith <tsmith@chef.io>

README.md

@@ -15,7 +15,7 @@ Manages installation of Erlang via packages or source.
 
 ### Chef
 
-- Chef 12.9+
+- Chef 13.3+
 
 ### Cookbooks
 

kitchen.dokken.yml

@@ -64,7 +64,7 @@ platforms:
 
 - name: opensuse-leap
   driver:
-    image: dokken/opensuse-leap
+    image: dokken/opensuse-leap-42
     pid_one_command: /bin/systemd
 
 suites:

metadata.rb

@@ -21,4 +21,4 @@ end
 
 source_url 'https://github.com/chef-cookbooks/erlang'
 issues_url 'https://github.com/chef-cookbooks/erlang/issues'
-chef_version '>= 12.9'
+chef_version '>= 13.3'