Update dependency simplecov to v1

Author: renovate[bot]

rails/Gemfile.lock

@@ -152,7 +152,6 @@ GEM
       warden (~> 1.2.3)
     devise-security (0.18.0)
       devise (>= 4.3.0)
-    docile (1.4.1)
     drb (2.2.3)
     erb (6.0.4)
     erubi (1.13.1)
@@ -347,12 +346,7 @@ GEM
       rexml (~> 3.2, >= 3.2.5)
       rubyzip (>= 1.2.2, < 4.0)
       websocket (~> 1.0)
-    simplecov (0.22.0)
-      docile (~> 1.1)
-      simplecov-html (~> 0.11)
-      simplecov_json_formatter (~> 0.1)
-    simplecov-html (0.13.2)
-    simplecov_json_formatter (0.1.4)
+    simplecov (1.0.2)
     spicy-proton (2.1.15)
       bindata (~> 2.3)
     sprockets (4.2.2)