Merge branch 'aaf-develop' into code-develop

* aaf-develop:
  Bump nokogiri from 1.13.4 to 1.13.6 (ausaccessfed#259)
  Bump rack from 2.2.3 to 2.2.3.1 (ausaccessfed#260)
  fix: mysqld_safe: command not found (ausaccessfed#258)
  Bump nokogiri from 1.13.3 to 1.13.4 (ausaccessfed#256)
  Bump puma from 5.6.2 to 5.6.4 (ausaccessfed#255)
  Gemfile updates (ausaccessfed#254)
  Add platform `x86_64-linux` (ausaccessfed#252)
  Upgrade to rails `6.0.4.4` (ausaccessfed#249)
  Bump nokogiri from 1.12.5 to 1.13.3
  Bump puma from 5.5.2 to 5.6.2
  Update puma to 5.5.2

Gemfile

@@ -2,13 +2,12 @@
 
 source 'https://rubygems.org'
 
-gem 'rails', '>= 5', '< 6'
+gem 'rails', '<6.1'
 gem 'sass-rails'
 
 gem 'jbuilder'
 gem 'mysql2'
 gem 'slim'
-gem 'therubyracer', require: false
 gem 'uglifier', require: false
 
 gem 'redis'