Bump strong_migrations from 0.6.8 to 0.7.0 (#9525)

* Bump strong_migrations from 0.6.8 to 0.7.0

Bumps [strong_migrations](https://github.com/ankane/strong_migrations) from 0.6.8 to 0.7.0.
- [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/v0.6.8...v0.7.0)

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

* Bump strong_migrations from 0.6.8 to 0.7.0 (Update vendor/cache)

* Enable safety check on rollbacks as well

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
Co-authored-by: rhymes <rhymes@hey.com>

Gemfile

@@ -100,7 +100,7 @@ gem "sprockets", "~> 4.0" # Sprockets is a Rack-based asset packaging system
 gem "staccato", "~> 0.5" # Ruby Google Analytics Measurement
 gem "storext", "~> 3.1" # Add type-casting and other features on top of ActiveRecord::Store.store_accessor
 gem "stripe", "~> 5.22" # Ruby library for the Stripe API
-gem "strong_migrations", "~> 0.6" # Catch unsafe migrations
+gem "strong_migrations", "~> 0.7" # Catch unsafe migrations
 gem "timber", "~> 3.0" # Great Ruby logging made easy
 gem "timber-rails", github: "timberio/timber-ruby-rails", branch: "master" # Timber integration for Rails
 gem "twilio-ruby", "~> 5.39" # The official library for communicating with the Twilio REST API

Gemfile.lock

@@ -796,7 +796,7 @@ GEM
       dante (>= 0.2.0)
       multi_json (~> 1.0)
       stripe (> 5, < 6)
-    strong_migrations (0.6.8)
+    strong_migrations (0.7.0)
       activerecord (>= 5)
     test-prof (0.12.0)
     thor (0.20.3)
@@ -1016,7 +1016,7 @@ DEPENDENCIES
   storext (~> 3.1)
   stripe (~> 5.22)
   stripe-ruby-mock (~> 3.0)
-  strong_migrations (~> 0.6)
+  strong_migrations (~> 0.7)
   test-prof (~> 0.12)
   timber (~> 3.0)
   timber-rails!

config/initializers/strong_migrations.rb

@@ -1,8 +1,11 @@
 # https://github.com/ankane/strong_migrations#existing-migrations
 StrongMigrations.start_after = 20_200_106_074_859
 
-# https://github.com/ankane/strong_migrations#removing-an-index
+# https://github.com/ankane/strong_migrations#removing-an-index-non-concurrently
 StrongMigrations.enable_check(:remove_index)
 
 # https://github.com/ankane/strong_migrations#target-version
 StrongMigrations.target_postgresql_version = 11
+
+# https://github.com/ankane/strong_migrations#down-migrations--rollbacks
+StrongMigrations.check_down = true