⬆️ Update simplecov to version 0.18.2 (#76)

Author: SleeplessByte

Gemfile.lock

@@ -28,7 +28,6 @@ GEM
     http-form_data (2.2.0)
     http-parser (1.2.1)
       ffi-compiler (>= 1.0, < 2.0)
-    json (2.3.0)
     minitest (5.14.0)
     minitest-ci (3.4.0)
       minitest (>= 5.0.6)
@@ -40,11 +39,10 @@ GEM
     public_suffix (4.0.3)
     rake (13.0.1)
     ruby-progressbar (1.10.1)
-    simplecov (0.17.1)
+    simplecov (0.18.2)
       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)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.6)