Bump ruby/setup-ruby from 1.286.0 to 1.293.0 (#400)

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.286.0 to 1.293.0.
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Changelog](https://github.com/ruby/setup-ruby/blob/master/release.rb)
- [Commits](ruby/setup-ruby@90be115...dffb23f)

---
updated-dependencies:
- dependency-name: ruby/setup-ruby
  dependency-version: 1.293.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -33,7 +33,7 @@ jobs:
       - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4
         with:
           persist-credentials: false
-      - uses: ruby/setup-ruby@90be1154f987f4dc0fe0dd0feedac9e473aa4ba8 # v1
+      - uses: ruby/setup-ruby@dffb23f65a78bba8db45d387d5ea1bbd6be3ef18 # v1
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler: latest # to get this fix: https://github.com/rubygems/rubygems/issues/6165
@@ -76,7 +76,7 @@ jobs:
       - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4
         with:
           persist-credentials: false
-      - uses: ruby/setup-ruby@90be1154f987f4dc0fe0dd0feedac9e473aa4ba8 # v1
+      - uses: ruby/setup-ruby@dffb23f65a78bba8db45d387d5ea1bbd6be3ef18 # v1
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler-cache: true