Merge pull request #494 from fluent/dependabot/github_actions/actions/checkout-4

build(deps): bump actions/checkout from 3 to 4

Author: ashie

.github/workflows/linux.yml

@@ -20,7 +20,7 @@ jobs:
           - { min: '>= 0.12.0', max: '>= 0.12.0' }
     name: Ruby ${{ matrix.ruby }} unit testing on ${{ matrix.os }} with rdkafka gem version (min ${{ matrix.rdkafka_versions.min }} max ${{ matrix.rdkafka_versions.max }})
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}