Bump actions/checkout from 4 to 5 (#43)

Author: dependabot[bot]

.github/workflows/main.yml

@@ -19,7 +19,7 @@ jobs:
           - "3.4"
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with: