Removed ruby version spec in prep for lab validation

Gemfile

 source 'https://rubygems.org'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
-ruby '2.5.7'
+# ruby '2.5.7' - commented out dev ruby version to allow for lab version to work
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 5.2.4', '>= 5.2.4.4'