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

Bumps [rails](https://github.com/rails/rails) from `820fbd9` to `c0e67e6`.
- [Release notes](https://github.com/rails/rails/releases)
- [Commits](rails/rails@820fbd9...c0e67e6)

---
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: 820fbd9102a5488f3bfcc91ec35324b7076cc83e
+  revision: c0e67e654789682473eefbe3db257d3474b0a01f
   branch: main
   specs:
     actioncable (7.2.0.alpha)
@@ -147,7 +147,7 @@ GEM
     mini_mime (1.1.5)
     minitest (5.20.0)
     multipart-post (2.3.0)
-    net-imap (0.4.2)
+    net-imap (0.4.4)
       date
       net-protocol
     net-pop (0.1.2)
@@ -167,7 +167,7 @@ GEM
       pry (>= 0.13, < 0.15)
     psych (5.1.1.1)
       stringio
-    racc (1.7.1)
+    racc (1.7.3)
     rack (3.0.8)
     rack-session (2.0.0)
       rack (>= 3.0.0)