Bump ruby/setup-ruby from 1.276.0 to 1.278.0

Bumps [ruby/setup-ruby](https://github.com/ruby/setup-ruby) from 1.276.0 to 1.278.0.
- [Release notes](https://github.com/ruby/setup-ruby/releases)
- [Changelog](https://github.com/ruby/setup-ruby/blob/master/release.rb)
- [Commits](ruby/setup-ruby@ae195bb...4c24fa5)

---
updated-dependencies:
- dependency-name: ruby/setup-ruby
  dependency-version: 1.278.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -30,7 +30,7 @@ jobs:
       - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4
         with:
           persist-credentials: false
-      - uses: ruby/setup-ruby@ae195bbe749a7cef685ac729197124a48305c1cb # v1
+      - uses: ruby/setup-ruby@4c24fa5ec04b2e79eb40571b1cee2a0d2b705771 # v1
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler: latest # to get this fix: https://github.com/rubygems/rubygems/issues/6165
@@ -70,7 +70,7 @@ jobs:
       - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v4
         with:
           persist-credentials: false
-      - uses: ruby/setup-ruby@ae195bbe749a7cef685ac729197124a48305c1cb # v1
+      - uses: ruby/setup-ruby@4c24fa5ec04b2e79eb40571b1cee2a0d2b705771 # v1
         with:
           ruby-version: ${{ matrix.ruby }}
           bundler-cache: true