Merge branch 'fix-gemfile-rails-security-update' into 'master'

Security update of gem rails to version 4.2.11

See merge request gitlab-org/gitlab-ce!23520

Gemfile

@@ -5,7 +5,7 @@ end
 
 gem_versions = {}
 gem_versions['activerecord_sane_schema_dumper'] = rails5? ? '1.0'    : '0.2'
-gem_versions['rails']                           = rails5? ? '5.0.7'  : '4.2.10'
+gem_versions['rails']                           = rails5? ? '5.0.7'  : '4.2.11'
 gem_versions['rails-i18n']                      = rails5? ? '~> 5.1' : '~> 4.0.9'
 
 # The 2.0.6 version of rack requires monkeypatch to be present in

Gemfile.rails4.lock

@@ -619,16 +619,16 @@ GEM
       rack
     rack-test (0.6.3)
       rack (>= 1.0)
-    rails (4.2.10)
-      actionmailer (= 4.2.10)
-      actionpack (= 4.2.10)
-      actionview (= 4.2.10)
-      activejob (= 4.2.10)
-      activemodel (= 4.2.10)
-      activerecord (= 4.2.10)
-      activesupport (= 4.2.10)
+    rails (4.2.11)
+      actionmailer (= 4.2.11)
+      actionpack (= 4.2.11)
+      actionview (= 4.2.11)
+      activejob (= 4.2.11)
+      activemodel (= 4.2.11)
+      activerecord (= 4.2.11)
+      activesupport (= 4.2.11)
       bundler (>= 1.3.0, < 2.0)
-      railties (= 4.2.10)
+      railties (= 4.2.11)
       sprockets-rails
     rails-deprecated_sanitizer (1.0.3)
       activesupport (>= 4.2.0.alpha)
@@ -1086,7 +1086,7 @@ DEPENDENCIES
   rack-cors (~> 1.0.0)
   rack-oauth2 (~> 1.2.1)
   rack-proxy (~> 0.6.0)
-  rails (= 4.2.10)
+  rails (= 4.2.11)
   rails-deprecated_sanitizer (~> 1.0.3)
   rails-i18n (~> 4.0.9)
   rainbow (~> 3.0)