Bump ruby/setup-ruby from 1.238.0 to 1.263.0

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.238.0 to 1.263.0.
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Changelog](https://github.com/ruby/setup-ruby/blob/master/release.rb)
- [Commits](ruby/setup-ruby@e34163c...0481980)

---
updated-dependencies:
- dependency-name: ruby/setup-ruby
  dependency-version: 1.263.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -28,7 +28,7 @@ jobs:
     steps:
       - uses: actions/checkout@50fbc622fc4ef5163becd7fab6573eac35f8462e # v1.2.0
       - name: Set up Ruby ${{ matrix.ruby }}
-        uses: ruby/setup-ruby@e34163cd15f4bb403dcd72d98e295997e6a55798 # v1.238.0
+        uses: ruby/setup-ruby@0481980f17b760ef6bca5e8c55809102a0af1e5a # v1.263.0
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler-cache: true