Bump strong_migrations from 0.3.1 to 0.4.0 (#10871)

Bumps [strong_migrations](https://github.com/ankane/strong_migrations) from 0.3.1 to 0.4.0.
- [Release notes](https://github.com/ankane/strong_migrations/releases)
- [Changelog](https://github.com/ankane/strong_migrations/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ankane/strong_migrations/compare/v0.3.1...v0.4.0)

Gemfile

@@ -82,7 +82,7 @@ gem 'simple-navigation', '~> 4.0'
 gem 'simple_form', '~> 4.1'
 gem 'sprockets-rails', '~> 3.2', require: 'sprockets/railtie'
 gem 'stoplight', '~> 2.1.3'
-gem 'strong_migrations', '~> 0.3'
+gem 'strong_migrations', '~> 0.4'
 gem 'tty-command', '~> 0.8', require: false
 gem 'tty-prompt', '~> 0.19', require: false
 gem 'twitter-text', '~> 1.14'

Gemfile.lock

@@ -593,8 +593,8 @@ GEM
     stoplight (2.1.3)
     streamio-ffmpeg (3.0.2)
       multi_json (~> 1.8)
-    strong_migrations (0.3.1)
-      activerecord (>= 3.2.0)
+    strong_migrations (0.4.0)
+      activerecord (>= 5)
     temple (0.8.1)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
@@ -759,7 +759,7 @@ DEPENDENCIES
   stackprof
   stoplight (~> 2.1.3)
   streamio-ffmpeg (~> 3.0)
-  strong_migrations (~> 0.3)
+  strong_migrations (~> 0.4)
   thor (~> 0.20)
   tty-command (~> 0.8)
   tty-prompt (~> 0.19)