build(deps): bump rails in /gemfiles/rails-main

Bumps [rails](https://github.com/rails/rails) from `171c4e4` to `8bac99a`.
- [Release notes](https://github.com/rails/rails/releases)
- [Commits](rails/rails@171c4e4...8bac99a)

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

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

gemfiles/rails-main/Gemfile.lock

@@ -1,6 +1,6 @@
 GIT
   remote: https://github.com/rails/rails.git
-  revision: 171c4e4d377d9653a79d38c94bdfadf1a2c4c312
+  revision: 8bac99ad7a403ef52a5c97e7afa73c7bbcc67110
   branch: main
   specs:
     actioncable (8.0.0.alpha)
@@ -129,7 +129,7 @@ GEM
     irb (1.14.0)
       rdoc (>= 4.0.0)
       reline (>= 0.4.2)
-    logger (1.6.0)
+    logger (1.6.1)
     loofah (2.22.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.12.0)
@@ -207,7 +207,7 @@ GEM
     rspec-support (3.13.1)
     securerandom (0.3.1)
     stringio (3.1.1)
-    thor (1.3.1)
+    thor (1.3.2)
     timeout (0.4.1)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)