Merge pull request #1797 from mishina2228/update-actions-checkout

Bump actions/checkout from v2 to v4

Author: schneems

.github/workflows/main.yml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1