Bump strong_migrations from 0.7.7 to 0.7.8 (#2454)

Bumps [strong_migrations](https://github.com/ankane/strong_migrations) from 0.7.7 to 0.7.8.
- [Release notes](https://github.com/ankane/strong_migrations/releases)
- [Changelog](https://github.com/ankane/strong_migrations/blob/master/CHANGELOG.md)
- [Commits](ankane/strong_migrations@v0.7.7...v0.7.8)

---
updated-dependencies:
- dependency-name: strong_migrations
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Gemfile

@@ -46,7 +46,7 @@ gem "puma"
 gem "rails", "~> 6.1.4"
 gem "sass-rails"
 gem "sidekiq"
-gem "strong_migrations", "~> 0.7.7"
+gem "strong_migrations", "~> 0.7.8"
 gem "sprockets", "~> 4.0.2"
 gem "toastr-rails"
 gem "uglifier", ">= 1.3.0"

Gemfile.lock

@@ -505,7 +505,7 @@ GEM
       net-ssh (>= 2.8.0)
     sshkit-interactive (0.3.0)
       sshkit (~> 1.12)
-    strong_migrations (0.7.7)
+    strong_migrations (0.7.8)
       activerecord (>= 5)
     terminal-notifier (2.0.0)
     terminal-notifier-guard (1.7.0)
@@ -637,7 +637,7 @@ DEPENDENCIES
   spring
   spring-watcher-listen
   sprockets (~> 4.0.2)
-  strong_migrations (~> 0.7.7)
+  strong_migrations (~> 0.7.8)
   terminal-notifier
   terminal-notifier-guard
   toastr-rails