Bump rails from b294a25 to 3bbf21c

Bumps [rails](https://github.com/rails/rails) from `b294a25` to `3bbf21c`.
- [Release notes](https://github.com/rails/rails/releases)
- [Commits](rails/rails@b294a25...3bbf21c)

---
updated-dependencies:
- dependency-name: rails
  dependency-type: direct:production
...

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

Gemfile.lock

@@ -11,7 +11,7 @@ GIT
 
 GIT
   remote: https://github.com/rails/rails.git
-  revision: b294a25a8a59abef00a72700607b53bac901f83d
+  revision: 3bbf21c3431c4d195a7bad490291d56e78c97657
   branch: main
   specs:
     actioncable (7.2.0.alpha)