build(deps-dev): bump rbs from 3.9.0 to 3.9.1 in /Library/Homebrew

Bumps [rbs](https://github.com/ruby/rbs) from 3.9.0 to 3.9.1.
- [Release notes](https://github.com/ruby/rbs/releases)
- [Changelog](https://github.com/ruby/rbs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/ruby/rbs/compare/v3.9.0...v3.9.1)

---
updated-dependencies:
- dependency-name: rbs
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

Library/Homebrew/Gemfile.lock

@@ -51,7 +51,7 @@ GEM
       prism (~> 1.0)
       rbs (>= 3.4.4)
       sorbet-runtime (>= 0.5.9204)
-    rbs (3.9.0)
+    rbs (3.9.1)
       logger
     redcarpet (3.6.1)
     regexp_parser (2.10.0)
@@ -160,7 +160,6 @@ GEM
 
 PLATFORMS
   aarch64-linux
-  arm-linux
   arm64-darwin
   x86_64-darwin
   x86_64-linux