Bump capybara from 2.18.0 to 3.8.2 (#8858)

Bumps [capybara](https://github.com/teamcapybara/capybara) from 2.18.0 to 3.8.2.
- [Release notes](https://github.com/teamcapybara/capybara/releases)
- [Changelog](https://github.com/teamcapybara/capybara/blob/master/History.md)
- [Commits](https://github.com/teamcapybara/capybara/compare/2.18.0...3.8.2)

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

Gemfile

@@ -108,7 +108,7 @@ group :production, :test do
 end
 
 group :test do
-  gem 'capybara', '~> 2.18'
+  gem 'capybara', '~> 3.8'
   gem 'climate_control', '~> 0.2'
   gem 'faker', '~> 1.8'
   gem 'microformats', '~> 4.0'

Gemfile.lock

@@ -124,13 +124,13 @@ GEM
       sshkit (~> 1.3)
     capistrano-yarn (2.0.2)
       capistrano (~> 3.0)
-    capybara (2.18.0)
+    capybara (3.8.2)
       addressable
       mini_mime (>= 0.1.3)
-      nokogiri (>= 1.3.3)
+      nokogiri (~> 1.8)
-      rack (>= 1.0.0)
+      rack (>= 1.6.0)
-      rack-test (>= 0.5.4)
+      rack-test (>= 0.6.3)
-      xpath (>= 2.0, < 4.0)
+      xpath (~> 3.1)
     case_transform (0.2)
       activesupport
     charlock_holmes (0.7.6)
@@ -339,7 +339,7 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
     mimemagic (0.3.2)
-    mini_mime (1.0.0)
+    mini_mime (1.0.1)
     mini_portile2 (2.3.0)
     minitest (5.11.3)
     msgpack (1.2.4)
@@ -415,7 +415,7 @@ GEM
       pry (~> 0.10)
     pry-rails (0.3.6)
       pry (>= 0.10.4)
-    public_suffix (3.0.2)
+    public_suffix (3.0.3)
     puma (3.11.4)
     pundit (1.1.0)
       activesupport (>= 3.0.0)
@@ -643,7 +643,7 @@ GEM
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.3)
     wisper (2.0.0)
-    xpath (3.0.0)
+    xpath (3.1.0)
       nokogiri (~> 1.8)
 
 PLATFORMS
@@ -666,7 +666,7 @@ DEPENDENCIES
   capistrano-rails (~> 1.3)
   capistrano-rbenv (~> 2.1)
   capistrano-yarn (~> 2.0)
-  capybara (~> 2.18)
+  capybara (~> 3.8)
   charlock_holmes (~> 0.7.6)
   chewy (~> 5.0)
   cld3 (~> 3.2.0)