Merge pull request #20 from mi-wada/use-actions_checkout_v4

chore: Update actions/checkout to v4

Author: mi-wada

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
         ruby: ['2.5', '2.6', '2.7', '3.0', '3.1', '3.2', '3.3']
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Set up Ruby ${{ matrix.ruby }}
         uses: ruby/setup-ruby@v1
         with:
@@ -47,7 +47,7 @@ jobs:
         ruby: ['2.5', '2.6', '2.7', '3.0', '3.1', '3.2', '3.3']
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Set up Ruby ${{ matrix.ruby }}
         uses: ruby/setup-ruby@v1
         with:

.github/workflows/release.yml

@@ -11,7 +11,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Tag with the gem version
         run: |
           GEM_VERSION=$(ruby -e "require 'rubygems'; gemspec = Dir.glob(\"./**/*.gemspec\").first; puts Gem::Specification::load(gemspec).version")