Bump ruby/setup-ruby from 1.269.0 to 1.288.0

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.269.0 to 1.288.0.
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Changelog](https://github.com/ruby/setup-ruby/blob/master/release.rb)
- [Commits](d697be2f83...09a7688d3b)

---
updated-dependencies:
- dependency-name: ruby/setup-ruby
  dependency-version: 1.288.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/testing.yml

@@ -38,7 +38,7 @@ jobs:
       - name: Code Checkout
         uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       - name: Setup Ruby
-        uses: ruby/setup-ruby@d697be2f83c6234b20877c3b5eac7a7f342f0d0c # v1.269.0
+        uses: ruby/setup-ruby@09a7688d3b55cf0e976497ff046b70949eeaccfd # v1.288.0
         with:
           ruby-version: ${{matrix.ruby}}
           bundler-cache: true