Fix rack gem reported vuln (#4221)

frameworks/Ruby/grape/Gemfile

@@ -6,5 +6,5 @@ gem 'puma', '~> 3.9.1'
 gem 'activerecord', '5.1.5', :require => 'active_record'
 gem 'activerecord-import', "~> 0.18.1"
 gem 'grape', '1.1.0'
-gem 'rack', '1.6.5'
+gem 'rack', '1.6.11'
 gem 'json', '2.1.0'

frameworks/Ruby/rack-sequel/Gemfile

@@ -4,7 +4,7 @@ gem 'json', '~> 2.0'
 gem 'passenger', '~> 5.1', :platforms=>[:ruby, :mswin], :require=>false
 gem 'puma', '~> 3.9', :require=>false
 gem 'sequel', '~> 5.0'
-gem 'rack', '~> 2.0'
+gem 'rack', '2.0.6'
 gem 'torquebox-web', '>= 4.0.0.beta3', '< 5', :platforms=>:jruby, :require=>false
 gem 'unicorn', '~> 5.2', :platforms=>[:ruby, :mswin], :require=>false
 

frameworks/Ruby/rack/Gemfile

@@ -3,6 +3,6 @@ source 'http://rubygems.org'
 gem 'mysql2', '0.4.5'
 gem 'unicorn', '5.3.0'
 gem 'puma', '3.9.1'
-gem 'rack', '2.0.1'
+gem 'rack', '2.0.6'
 gem 'json', '2.1.0'
 gem 'falcon'