Bump simplecov from 0.18.2 to 0.18.5 (#13310)

Bumps [simplecov](https://github.com/colszowka/simplecov) from 0.18.2 to 0.18.5.
- [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/v0.18.2...v0.18.5)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Gemfile.lock

@@ -585,10 +585,10 @@ GEM
     simple_form (5.0.2)
       actionpack (>= 5.0)
       activemodel (>= 5.0)
-    simplecov (0.18.2)
+    simplecov (0.18.5)
       docile (~> 1.1)
       simplecov-html (~> 0.11)
-    simplecov-html (0.12.0)
+    simplecov-html (0.12.2)
     sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)