Test on Ruby 2.7 + random testing improvements

Update the Github templates to use multiple labels
Use Gem caching our BK
Add Ruby 2.7 testing
Use Debian 10 Ruby containers not Debian 9

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

1 files changed, 2 insertions, 2 deletions

diff --git a/Gemfile b/Gemfile
index 8be580d..a5b7655 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,9 +3,9 @@ source "https://rubygems.org"
 gemspec
 
 group :docs do
-  gem "yard"
-  gem "redcarpet"
   gem "github-markup"
+  gem "redcarpet"
+  gem "yard"
 end
 
 group :test do