gemfile: Group mustache gem with other templating gems

Author: sman591

Gemfile

@@ -28,8 +28,6 @@ gem 'redis', '~> 4.0'
 # Use ActiveModel has_secure_password
 # gem 'bcrypt', '~> 3.1.7'
 
-gem 'mustache', '~> 1.0'
-
 # Use ActiveStorage variant
 # gem 'mini_magick', '~> 4.8'
 
@@ -57,6 +55,7 @@ gem 'roadie-rails'
 gem 'chartkick', '~> 3.0'
 gem 'groupdate'
 gem 'font-awesome-rails', '~> 4.0' # needed for icon helpers
+gem 'mustache', '~> 1.0'
 
 # Assets
 gem 'sprockets'