Update rbs requirement from ~> 3.1.0 to ~> 3.2.0

Updates the requirements on [rbs](https://github.com/ruby/rbs) to permit the latest version.
- [Release notes](https://github.com/ruby/rbs/releases)
- [Changelog](https://github.com/ruby/rbs/blob/master/CHANGELOG.md)
- [Commits](ruby/rbs@v3.1.0...v3.2.0)

---
updated-dependencies:
- dependency-name: rbs
  dependency-type: direct:development
...

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

Gemfile

@@ -7,7 +7,7 @@ gem 'rake', '~> 13.0.0'
 # Development Apps
 group :development do
   group :type_check do
-    gem 'rbs', '~> 3.1.0', require: false
+    gem 'rbs', '~> 3.2.0', require: false
     gem 'steep', '~> 1.5.0', require: false
   end
   group :documentation do