fix: amazing/Gemfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-RUBY-NOKOGIRI-2620374
- https://snyk.io/vuln/SNYK-RUBY-NOKOGIRI-2630623
- https://snyk.io/vuln/SNYK-RUBY-NOKOGIRI-2630898

amazing/Gemfile

@@ -2,11 +2,11 @@ source 'https://rubygems.org'
 
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
-gem 'rails', '4.2.1.rc3'
+gem 'rails', '4.2.1'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3'
 # Use SCSS for stylesheets
-gem 'sass-rails', '~> 5.0'
+gem 'sass-rails', '~> 5.0', '>= 5.0.3'
 # Use Uglifier as compressor for JavaScript assets
 gem 'uglifier', '>= 1.3.0'
 # Use CoffeeScript for .coffee assets and views
@@ -41,7 +41,7 @@ group :development, :test do
   gem 'byebug'
 
   # Access an IRB console on exception pages or by using <%= console %> in views
-  gem 'web-console', '~> 2.0'
+  gem 'web-console', '~> 2.1', '>= 2.1.3'
 
   # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
   gem 'spring'