Update capistrano-rails to version 1.1.8

Gemfile.lock

@@ -74,14 +74,14 @@ GEM
       uniform_notifier (~> 1.9.0)
     byebug (6.0.2)
     cancancan (1.13.1)
-    capistrano (3.4.0)
+    capistrano (3.4.1)
       i18n
       rake (>= 10.0.0)
       sshkit (~> 1.3)
-    capistrano-bundler (1.1.4)
+    capistrano-bundler (1.3.0)
       capistrano (~> 3.1)
       sshkit (~> 1.2)
-    capistrano-rails (1.1.4)
+    capistrano-rails (1.1.8)
       capistrano (~> 3.1)
       capistrano-bundler (~> 1.1)
     capistrano-rails-console (1.0.0)
@@ -108,7 +108,6 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.9.1.1)
-    colorize (0.7.7)
     concurrent-ruby (1.0.5)
     connection_pool (2.2.0)
     coolline (0.5.0)
@@ -217,7 +216,7 @@ GEM
     multipart-post (2.0.0)
     net-scp (1.2.1)
       net-ssh (>= 2.6.5)
-    net-ssh (3.0.1)
+    net-ssh (4.2.0)
     netrc (0.11.0)
     newrelic_rpm (3.13.2.302)
     nokogiri (1.8.1)
@@ -382,8 +381,7 @@ GEM
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
-    sshkit (1.7.1)
-      colorize (>= 0.7.0)
+    sshkit (1.15.1)
       net-scp (>= 1.1.2)
       net-ssh (>= 2.8.0)
     sunspot (2.2.7)