match Gemfile to devdocs master, again

Author: bdenham

Gemfile

@@ -3,7 +3,7 @@
 source 'https://rubygems.org'
 
 gem 'devdocs', git: 'https://github.com/magento-devdocs/devdocs-theme.git'
-gem 'jekyll', '4.2.2'
+gem 'jekyll'
 gem 'rake'
 gem 'whatsup_github'
 

Gemfile.lock

@@ -185,7 +185,7 @@ DEPENDENCIES
  html-proofer
  image_optim
  image_optim_pack
- jekyll (= 4.2.2)
+ jekyll
  jekyll-algolia (~> 1.0)
  jekyll-optional-front-matter
  jekyll-redirect-from