Bump ruby/setup-ruby from 1.61.0 to 1.133.2 (#85)

* Bump ruby/setup-ruby from 1.61.0 to 1.133.2

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.61.0 to 1.133.2.
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Commits](ruby/setup-ruby@473e4d8...93287a1)

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

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

* Update ruby.yml

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Yukihiro Okada (Yuki) <yukihiro.okada@treasure-data.com>

.github/workflows/ruby.yml

@@ -20,10 +20,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Set up Ruby
-    # To automatically get bug fixes and new Ruby versions for ruby/setup-ruby,
-    # change this to (see https://github.com/ruby/setup-ruby#versioning):
-    # uses: ruby/setup-ruby@v1
-        uses: ruby/setup-ruby@473e4d8fe5dd94ee328fdfca9f8c9c7afc9dae5e
+        uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby-version }}
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically