build(deps): bump minitest from 5.14.0 to 5.14.1 in /docs

Bumps [minitest](https://github.com/seattlerb/minitest) from 5.14.0 to 5.14.1.
- [Release notes](https://github.com/seattlerb/minitest/releases)
- [Changelog](https://github.com/seattlerb/minitest/blob/master/History.rdoc)
- [Commits](https://github.com/seattlerb/minitest/commits

)

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

docs/Gemfile.lock

@@ -210,7 +210,7 @@ GEM
       jekyll (>= 3.5, < 5.0)
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
-    minitest (5.14.0)
+    minitest (5.14.1)
     multipart-post (2.1.1)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)