Bump ruby/setup-ruby from 1.253.0 to 1.256.0

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.253.0 to 1.256.0.
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Changelog](https://github.com/ruby/setup-ruby/blob/master/release.rb)
- [Commits](ruby/setup-ruby@bb6434c...efbf473)

---
updated-dependencies:
- dependency-name: ruby/setup-ruby
  dependency-version: 1.256.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
     - name: Check out code
       uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
     - name: Set up Ruby ${{ matrix.ruby }}
-      uses: ruby/setup-ruby@bb6434c747fa7022e12fa1cae2a0951fcffcff26 # v1.253.0
+      uses: ruby/setup-ruby@efbf473cab83af4468e8606cc33eca9281bb213f # v1.256.0
       with:
         ruby-version: ${{ matrix.ruby }}
         bundler-cache: true