Bump simplecov from 0.18.1 to 0.18.2 (#13106)

Bumps [simplecov](https://github.com/colszowka/simplecov) from 0.18.1 to 0.18.2.
- [Release notes](https://github.com/colszowka/simplecov/releases)
- [Changelog](https://github.com/colszowka/simplecov/blob/master/CHANGELOG.md)
- [Commits](https://github.com/colszowka/simplecov/compare/v0.18.1...v0.18.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Gemfile.lock

@@ -583,10 +583,10 @@ GEM
     simple_form (5.0.1)
       actionpack (>= 5.0)
       activemodel (>= 5.0)
-    simplecov (0.18.1)
+    simplecov (0.18.2)
       docile (~> 1.1)
-      simplecov-html (~> 0.11.0)
+      simplecov-html (~> 0.11)
-    simplecov-html (0.11.0)
+    simplecov-html (0.12.0)
     sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)