build(deps): Bump ruby/setup-ruby from 1.167.0 to 1.168.0

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.167.0 to 1.168.0.
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Commits](ruby/setup-ruby@b203567...432702e)

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

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

.github/workflows/docs.yml

@@ -38,7 +38,7 @@ jobs:
     - name: Git Checkout
       uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
     - name: Set up Ruby
-      uses: ruby/setup-ruby@b203567269b5bbc256dbc1c84f7495913f977353
+      uses: ruby/setup-ruby@432702e864cadc1b56247e31aa341be5be3e129a
       with:
         ruby-version: 2.7
         bundler-cache: true