Update test.yml

Author: mpyw

.github/workflows/test.yml

@@ -19,7 +19,7 @@ jobs:
           - { php: 7.1, flags: --prefer-lowest }
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2