build(deps): bump ruby/setup-ruby from 1.274.0 to 1.281.0

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.274.0 to 1.281.0.
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Changelog](https://github.com/ruby/setup-ruby/blob/master/release.rb)
- [Commits](ruby/setup-ruby@ed55d55...675dd7b)

---
updated-dependencies:
- dependency-name: ruby/setup-ruby
  dependency-version: 1.281.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/docs.yml

@@ -40,7 +40,7 @@ jobs:
     - name: Git Checkout
       uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8
     - name: Set up Ruby
-      uses: ruby/setup-ruby@ed55d55e820a01da7d3e4863a8c51a61d73c3228
+      uses: ruby/setup-ruby@675dd7ba1b06c8786a1480d89c384f5620a42647
       with:
         ruby-version: 3.4.5
         bundler-cache: true

.github/workflows/postrelease.yml

@@ -41,7 +41,7 @@ jobs:
       with:
         ref: next
     - name: Set up Ruby
-      uses: ruby/setup-ruby@ed55d55e820a01da7d3e4863a8c51a61d73c3228
+      uses: ruby/setup-ruby@675dd7ba1b06c8786a1480d89c384f5620a42647
       with:
         ruby-version: 3.4.5
         bundler-cache: true