Update actions/checkout to v3

Author: wrt54g

.github/workflows/workflow.yml

@@ -17,7 +17,7 @@ jobs:
         operating-system: [ubuntu-latest, windows-latest]
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
 
     - name: Set Node.js 16.x
       uses: actions/setup-node@v3