build(deps): bump ruby/setup-ruby from 1.240.0 to 1.242.0

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.240.0 to 1.242.0.
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Changelog](https://github.com/ruby/setup-ruby/blob/master/release.rb)
- [Commits](1a0ff446f5...cb0fda56a3)

---
updated-dependencies:
- dependency-name: ruby/setup-ruby
  dependency-version: 1.242.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/docs.yml

@@ -52,7 +52,7 @@ jobs:
         run: vale docs/
 
       - name: Install Ruby
-        uses: ruby/setup-ruby@1a0ff446f5856bdfec298b61a09727c860d9d480 # v1.240.0
+        uses: ruby/setup-ruby@cb0fda56a307b8c78d38320cd40d9eb22a3bf04e # v1.242.0
         with:
           bundler-cache: true
           working-directory: docs

.github/workflows/rubydoc.yml

@@ -42,7 +42,7 @@ jobs:
           persist-credentials: false
 
       - name: Install Ruby
-        uses: ruby/setup-ruby@1a0ff446f5856bdfec298b61a09727c860d9d480 # v1.240.0
+        uses: ruby/setup-ruby@cb0fda56a307b8c78d38320cd40d9eb22a3bf04e # v1.242.0
         with:
           bundler-cache: true
           working-directory: rubydoc