Bump activesupport from 5.2.4.2 to 5.2.4.3

Bumps [activesupport](https://github.com/rails/rails) from 5.2.4.2 to 5.2.4.3.
- [Release notes](https://github.com/rails/rails/releases)
- [Changelog](https://github.com/rails/rails/blob/v6.0.3.1/activesupport/CHANGELOG.md)
- [Commits](rails/rails@v5.2.4.2...v5.2.4.3)

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

Gemfile.lock

@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (5.2.4.2)
+    activesupport (5.2.4.3)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
@@ -302,7 +302,7 @@ GEM
     memoist (0.16.2)
     method_source (0.9.2)
     mini_mime (1.0.2)
-    minitest (5.14.0)
+    minitest (5.14.1)
     mixlib-config (3.0.6)
       tomlrb
     mixlib-install (3.12.1)