Merge pull request #6838 from Homebrew/dependabot/bundler/docs/activesupport-6.0.2

build: bump activesupport from 6.0.1 to 6.0.2 in /docs

docs/Gemfile.lock

 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (6.0.1)
+    activesupport (6.0.2)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)