Bump capistrano-rails from 1.3.1 to 1.4.0

Bumps [capistrano-rails](https://github.com/capistrano/rails) from 1.3.1 to 1.4.0.
- [Release notes](https://github.com/capistrano/rails/releases)
- [Changelog](https://github.com/capistrano/rails/blob/master/CHANGELOG.md)
- [Commits](https://github.com/capistrano/rails/compare/v1.3.1...v1.4.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>

Gemfile

@@ -86,7 +86,7 @@ end
 group :development do
   gem 'capistrano', '~> 3.10.1', require: false
   gem 'capistrano-bundler', '~> 1.2', require: false
-  gem 'capistrano-rails', '~> 1.3.1', require: false
+  gem 'capistrano-rails', '~> 1.4.0', require: false
   gem 'capistrano3-delayed-job', '~> 1.7.3'
   gem 'mdl', '~> 0.4.0', require: false
   gem 'rubocop', '~> 0.54.0', require: false

Gemfile.lock

@@ -83,7 +83,7 @@ GEM
     capistrano-bundler (1.3.0)
       capistrano (~> 3.1)
       sshkit (~> 1.2)
-    capistrano-rails (1.3.1)
+    capistrano-rails (1.4.0)
       capistrano (~> 3.1)
       capistrano-bundler (~> 1.1)
     capistrano3-delayed-job (1.7.5)
@@ -271,7 +271,7 @@ GEM
     multipart-post (2.0.0)
     net-scp (1.2.1)
       net-ssh (>= 2.6.5)
-    net-ssh (4.2.0)
+    net-ssh (5.0.2)
     newrelic_rpm (4.1.0.333)
     nokogiri (1.8.4)
       mini_portile2 (~> 2.3.0)
@@ -448,7 +448,7 @@ GEM
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
-    sshkit (1.15.1)
+    sshkit (1.17.0)
       net-scp (>= 1.1.2)
       net-ssh (>= 2.8.0)
     term-ansicolor (1.6.0)
@@ -507,7 +507,7 @@ DEPENDENCIES
   cancancan (~> 2.1.2)
   capistrano (~> 3.10.1)
   capistrano-bundler (~> 1.2)
-  capistrano-rails (~> 1.3.1)
+  capistrano-rails (~> 1.4.0)
   capistrano3-delayed-job (~> 1.7.3)
   capybara (~> 2.17.0)
   ckeditor (~> 4.2.3)