Bump strong_migrations from 0.2.3 to 0.3.0 (mastodon#8991)

Bumps [strong_migrations](https://github.com/ankane/strong_migrations) from 0.2.3 to 0.3.0.
- [Release notes](https://github.com/ankane/strong_migrations/releases)
- [Changelog](https://github.com/ankane/strong_migrations/blob/master/CHANGELOG.md)
- [Commits](ankane/strong_migrations@v0.2.3...v0.3.0)

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

Gemfile

@@ -81,7 +81,7 @@ gem 'simple-navigation', '~> 4.0'
 gem 'simple_form', '~> 4.0'
 gem 'sprockets-rails', '~> 3.2', require: 'sprockets/railtie'
 gem 'stoplight', '~> 2.1.3'
-gem 'strong_migrations', '~> 0.2'
+gem 'strong_migrations', '~> 0.3'
 gem 'tty-command', '~> 0.8', require: false
 gem 'tty-prompt', '~> 0.17', require: false
 gem 'twitter-text', '~> 1.14'

Gemfile.lock

@@ -269,7 +269,7 @@ GEM
     httplog (1.1.1)
       rack (>= 1.0)
       rainbow (>= 2.0.0)
-    i18n (1.1.0)
+    i18n (1.1.1)
       concurrent-ruby (~> 1.0)
     i18n-tasks (0.9.25)
       activesupport (>= 4.0.2)
@@ -585,7 +585,7 @@ GEM
     stoplight (2.1.3)
     streamio-ffmpeg (3.0.2)
       multi_json (~> 1.8)
-    strong_migrations (0.2.3)
+    strong_migrations (0.3.0)
       activerecord (>= 3.2.0)
     temple (0.8.0)
     terminal-table (1.8.0)
@@ -752,7 +752,7 @@ DEPENDENCIES
   stackprof
   stoplight (~> 2.1.3)
   streamio-ffmpeg (~> 3.0)
-  strong_migrations (~> 0.2)
+  strong_migrations (~> 0.3)
   thor (~> 0.20)
   tty-command (~> 0.8)
   tty-prompt (~> 0.17)