Bump strong_migrations from 1.5.0 to 1.6.0

Bumps [strong_migrations](https://github.com/ankane/strong_migrations) from 1.5.0 to 1.6.0.
- [Changelog](https://github.com/ankane/strong_migrations/blob/master/CHANGELOG.md)
- [Commits](ankane/strong_migrations@v1.5.0...v1.6.0)

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

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

Gemfile

@@ -34,7 +34,7 @@ gem "paper_trail"
 # Associates users with roles.
 gem "rolify", "~> 6.0"
 # Enforces "safe" migrations.
-gem "strong_migrations", "1.5.0"
+gem "strong_migrations", "1.6.0"
 
 ##### JAVSCRIPT/CSS/ASSETS #######
 

Gemfile.lock

@@ -573,7 +573,7 @@ GEM
       rubocop-performance (~> 1.18.0)
     stimulus-rails (1.2.1)
       railties (>= 6.0.0)
-    strong_migrations (1.5.0)
+    strong_migrations (1.6.0)
       activerecord (>= 5.2)
     terser (1.1.17)
       execjs (>= 0.3.0, < 3)
@@ -703,7 +703,7 @@ DEPENDENCIES
   sprockets (~> 4.2.0)
   standard (~> 1.30)
   stimulus-rails
-  strong_migrations (= 1.5.0)
+  strong_migrations (= 1.6.0)
   terser
   turbo-rails
   web-console