Bump ruby/setup-ruby from 1 to 1.305.0 (#36)

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1 to 1.305.0.
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Changelog](https://github.com/ruby/setup-ruby/blob/master/release.rb)
- [Commits](ruby/setup-ruby@v1...v1.305.0)

---
updated-dependencies:
- dependency-name: ruby/setup-ruby
  dependency-version: 1.305.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -31,7 +31,7 @@ jobs:
     steps:
     - uses: actions/checkout@v6
     - name: Set up Ruby
-      uses: ruby/setup-ruby@v1
+      uses: ruby/setup-ruby@v1.305.0
       with:
         ruby-version: ${{ matrix.ruby }}
         bundler-cache: true

.github/workflows/pages-build.yml

@@ -23,7 +23,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
 
-      - uses: ruby/setup-ruby@v1
+      - uses: ruby/setup-ruby@v1.305.0
         with:
           ruby-version: "3.4"
           bundler-cache: true