Update capybara to version 3.2.1

Gemfile.lock

@@ -37,6 +37,8 @@ GEM
       minitest (~> 5.1)
       thread_safe (~> 0.3, >= 0.3.4)
       tzinfo (~> 1.1)
+    addressable (2.5.2)
+      public_suffix (>= 2.0.2, < 4.0)
     arel (6.0.4)
     ast (2.4.0)
     autoprefixer-rails (8.6.0)
@@ -54,12 +56,13 @@ GEM
     builder (3.2.3)
     byebug (10.0.2)
     cancancan (2.2.0)
-    capybara (2.4.4)
-      mime-types (>= 1.16)
-      nokogiri (>= 1.3.3)
-      rack (>= 1.0.0)
-      rack-test (>= 0.5.4)
-      xpath (~> 2.0)
+    capybara (3.2.1)
+      addressable
+      mini_mime (>= 0.1.3)
+      nokogiri (~> 1.8)
+      rack (>= 1.6.0)
+      rack-test (>= 0.6.3)
+      xpath (~> 3.1)
     climate_control (0.2.0)
     cliver (0.3.2)
     coderay (1.1.2)
@@ -176,9 +179,8 @@ GEM
     mini_portile2 (2.3.0)
     minitest (5.11.3)
     mousetrap-rails (1.4.6)
-    multi_json (1.13.1)
     mysql2 (0.4.10)
-    nokogiri (1.8.2)
+    nokogiri (1.8.3)
       mini_portile2 (~> 2.3.0)
     open4 (1.3.4)
     orm_adapter (0.5.0)
@@ -191,10 +193,9 @@ GEM
     parallel (1.12.1)
     parser (2.5.1.0)
       ast (~> 2.4.0)
-    poltergeist (1.6.0)
-      capybara (~> 2.1)
+    poltergeist (1.18.1)
+      capybara (>= 2.1, < 4)
       cliver (~> 0.3.1)
-      multi_json (~> 1.0)
       websocket-driver (>= 0.2.0)
     powerpack (0.1.2)
     pry (0.11.3)
@@ -205,10 +206,11 @@ GEM
       pry (~> 0.10)
     pry-rails (0.3.6)
       pry (>= 0.10.4)
+    public_suffix (3.0.2)
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
     rack (1.6.10)
-    rack-mini-profiler (0.10.5)
+    rack-mini-profiler (1.0.0)
       rack (>= 1.2.0)
     rack-test (0.6.3)
       rack (>= 1.0)
@@ -335,11 +337,11 @@ GEM
       binding_of_caller (>= 0.7.2)
       railties (>= 4.0)
       sprockets-rails (>= 2.0, < 4.0)
-    websocket-driver (0.5.3)
+    websocket-driver (0.7.0)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.2)
-    xpath (2.0.0)
-      nokogiri (~> 1.3)
+    websocket-extensions (0.1.3)
+    xpath (3.1.0)
+      nokogiri (~> 1.8)
 
 PLATFORMS
   ruby