Update codecov to version 0.5.0

Gemfile.lock

@@ -124,9 +124,8 @@ GEM
       aws_cf_signer
       rest-client
     cocoon (1.2.14)
-    codecov (0.2.11)
-      json
-      simplecov
+    codecov (0.5.0)
+      simplecov (>= 0.15, < 0.22)
     coderay (1.1.1)
     concurrent-ruby (1.1.8)
     countable-rails (0.0.1)
@@ -159,7 +158,7 @@ GEM
     devise_ichain_authenticatable (0.3.2)
       devise (>= 2.2)
     diff-lcs (1.3)
-    docile (1.3.2)
+    docile (1.3.5)
     domain_name (0.5.20180417)
       unf (>= 0.0.5, < 1.0.0)
     dotenv (2.7.5)
@@ -264,7 +263,7 @@ GEM
       thor (>= 0.14, < 2.0)
     jquery-ui-rails (6.0.1)
       railties (>= 3.2.16)
-    json (2.3.1)
+    json (2.5.1)
     json-schema (2.8.1)
       addressable (>= 2.4)
     jsonapi-renderer (0.2.2)
@@ -584,10 +583,12 @@ GEM
     shellany (0.0.1)
     shoulda-matchers (4.1.2)
       activesupport (>= 4.2.0)
-    simplecov (0.19.0)
+    simplecov (0.21.2)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.2)
     sixarm_ruby_unaccent (1.2.0)
     skylight (3.1.5)
       skylight-core (= 3.1.5)