use latest actions/checkout@v6

Author: akuzni2

.github/workflows/go-tests.yml

@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v6
 
       - name: Setup Go
         uses: actions/setup-go@v5