Bump rails from f481602 to f903206

Bumps [rails](https://github.com/rails/rails) from `f481602` to `f903206`.
- [Release notes](https://github.com/rails/rails/releases)
- [Commits](rails/rails@f481602...f903206)

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

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -1,6 +1,6 @@
 GIT
   remote: https://github.com/rails/rails.git
-  revision: f481602bc5f0e2b79f95b73d7cc343303dd69672
+  revision: f903206386a9e7d125c13dcdaa22be65680f428c
   branch: main
   specs:
     actioncable (8.0.0.beta1)