Update dependency strong_migrations to v1.6.4 (#27631)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Gemfile

@@ -88,7 +88,7 @@ gem 'simple-navigation', '~> 4.4'
 gem 'simple_form', '~> 5.2'
 gem 'sprockets-rails', '~> 3.4', require: 'sprockets/railtie'
 gem 'stoplight', '~> 3.0.1'
-gem 'strong_migrations', '1.3.0'
+gem 'strong_migrations', '1.6.4'
 gem 'tty-prompt', '~> 0.23', require: false
 gem 'twitter-text', '~> 3.1.0'
 gem 'tzinfo-data', '~> 1.2023'

Gemfile.lock

@@ -738,7 +738,7 @@ GEM
     stoplight (3.0.2)
       redlock (~> 1.0)
     stringio (3.0.8)
-    strong_migrations (1.3.0)
+    strong_migrations (1.6.4)
       activerecord (>= 5.2)
     swd (1.3.0)
       activesupport (>= 3)
@@ -939,7 +939,7 @@ DEPENDENCIES
   sprockets-rails (~> 3.4)
   stackprof
   stoplight (~> 3.0.1)
-  strong_migrations (= 1.3.0)
+  strong_migrations (= 1.6.4)
   test-prof
   thor (~> 1.2)
   tty-prompt (~> 0.23)