update checkout action to v4

Author: Patel-Raj

.github/workflows/test.yml

@@ -9,7 +9,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Install npm 8
         run: npm install -g npm@8