Update dependency codecov to v0.6.0

Gemfile

@@ -23,7 +23,7 @@ source 'https://rubygems.org'
 ruby '>= 2.6.0'
 
 gem 'bundler', '2.1.4'
-gem 'codecov', '0.2.8'
+gem 'codecov', '0.6.0'
 gem 'eslintrb', '2.1.0'
 gem 'glogin', '0.6.0'
 gem 'haml', '5.0.4'

Gemfile.lock

@@ -30,9 +30,8 @@ GEM
     backtrace (0.3.0)
     base58 (0.2.3)
     builder (3.2.4)
-    codecov (0.2.8)
-      json
-      simplecov
+    codecov (0.6.0)
+      simplecov (>= 0.15, < 0.22)
     coercible (1.0.0)
       descendants_tracker (~> 0.0.1)
     concurrent-ruby (1.1.3)
@@ -43,7 +42,7 @@ GEM
     diff-lcs (1.4.4)
     differ (0.1.2)
     diffy (3.4.2)
-    docile (1.3.2)
+    docile (1.4.0)
     equalizer (0.0.11)
     erubi (1.11.0)
     eslintrb (2.1.0)
@@ -182,10 +181,12 @@ GEM
     semantic (1.6.1)
     sentry-raven (2.7.4)
       faraday (>= 0.7.6, < 1.0)
-    simplecov (0.19.0)
+    simplecov (0.21.2)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
-    simplecov-html (0.12.2)
+      simplecov_json_formatter (~> 0.1)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.4)
     sinatra (2.0.4)
       mustermann (~> 1.0)
       rack (~> 2.0)
@@ -281,7 +282,7 @@ PLATFORMS
 
 DEPENDENCIES
   bundler (= 2.1.4)
-  codecov (= 0.2.8)
+  codecov (= 0.6.0)
   eslintrb (= 2.1.0)
   glogin (= 0.6.0)
   haml (= 5.0.4)