Bump actions/checkout from 3 to 4 (#217)

Author: tanya732

.github/workflows/rl-secure.yml

@@ -32,7 +32,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0