Use Rails 7.0 cache format; fixes #1071

config/initializers/new_framework_defaults_7_0.rb

@@ -39,7 +39,7 @@
 # will have a different format that is not supported by Rails 6.1 applications.
 # Only change this value after your application is fully deployed to Rails 7.0
 # and you have no plans to rollback.
-# Rails.application.config.active_support.cache_format_version = 7.0
+Rails.application.config.active_support.cache_format_version = 7.0
 
 # Calls `Rails.application.executor.wrap` around test cases.
 # This makes test cases behave closer to an actual request or job.