Deps: use webdrivers gem (#13)

`chromedriver-helper` [has been deprecated][1].

[1]: flavorjones/chromedriver-helper#83

Gemfile

@@ -27,6 +27,6 @@ end
 
 group :test do
   gem 'capybara'
-  gem 'chromedriver-helper'
   gem 'selenium-webdriver'
+  gem 'webdrivers'
 end

Gemfile.lock

@@ -44,8 +44,6 @@ GEM
       tzinfo (~> 1.1)
     addressable (2.6.0)
       public_suffix (>= 2.0.2, < 4.0)
-    archive-zip (0.12.0)
-      io-like (~> 0.3.0)
     arel (9.0.0)
     bcrypt (3.1.12)
     bindex (0.7.0)
@@ -63,9 +61,6 @@ GEM
       xpath (~> 3.2)
     childprocess (1.0.1)
       rake (< 13.0)
-    chromedriver-helper (2.1.1)
-      archive-zip (~> 0.10)
-      nokogiri (~> 1.8)
     concurrent-ruby (1.1.5)
     crass (1.0.4)
     diff-lcs (1.3)
@@ -76,7 +71,6 @@ GEM
       activesupport (>= 4.2.0)
     i18n (1.6.0)
       concurrent-ruby (~> 1.0)
-    io-like (0.3.0)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
@@ -192,6 +186,10 @@ GEM
       activemodel (>= 5.0)
       bindex (>= 0.4.0)
       railties (>= 5.0)
+    webdrivers (3.9.3)
+      nokogiri (~> 1.6)
+      rubyzip (~> 1.0)
+      selenium-webdriver (~> 3.0)
     websocket-driver (0.7.0)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.3)
@@ -206,7 +204,6 @@ DEPENDENCIES
   bootsnap
   byebug
   capybara
-  chromedriver-helper
   listen
   pg
   puma
@@ -219,6 +216,7 @@ DEPENDENCIES
   turbolinks
   uglifier
   web-console
+  webdrivers
 
 RUBY VERSION
    ruby 2.6.3p62

README.md

@@ -23,7 +23,6 @@
   * haml-lint
   * rubocop-rspec
   * scss_lint
-  * webdriver helper
   * shoulda-matchers
   * simplecov
   * webmock