Update simplecov 0.16.1 -> 0.18.5

Gemfile

@@ -374,7 +374,7 @@ group :development, :test do
 
   gem 'scss_lint', '~> 0.56.0', require: false
   gem 'haml_lint', '~> 0.34.0', require: false
-  gem 'simplecov', '~> 0.16.1', require: false
+  gem 'simplecov', '~> 0.18.5', require: false
   gem 'bundler-audit', '~> 0.6.1', require: false
 
   gem 'benchmark-ips', '~> 2.3.0', require: false

Gemfile.lock

@@ -240,7 +240,7 @@ GEM
     diffy (3.3.0)
     discordrb-webhooks-blackst0ne (3.3.0)
       rest-client (~> 2.0)
-    docile (1.3.1)
+    docile (1.3.2)
     domain_name (0.5.20180417)
       unf (>= 0.0.5, < 1.0.0)
     doorkeeper (5.0.2)
@@ -1015,11 +1015,10 @@ GEM
       jwt (>= 1.5, < 3.0)
       multi_json (~> 1.10)
     simple_po_parser (1.1.2)
-    simplecov (0.16.1)
+    simplecov (0.18.5)
       docile (~> 1.1)
-      json (>= 1.8, < 3)
-      simplecov-html (~> 0.10.0)
-    simplecov-html (0.10.2)
+      simplecov-html (~> 0.11)
+    simplecov-html (0.12.2)
     sixarm_ruby_unaccent (1.2.0)
     slack-messenger (2.3.3)
     snowplow-tracker (0.6.1)
@@ -1375,7 +1374,7 @@ DEPENDENCIES
   sidekiq (~> 5.2.7)
   sidekiq-cron (~> 1.0)
   simple_po_parser (~> 1.1.2)
-  simplecov (~> 0.16.1)
+  simplecov (~> 0.18.5)
   slack-messenger (~> 2.3.3)
   snowplow-tracker (~> 0.6.1)
   spring (~> 2.0.0)