Update build.yml

Author: lightszentip

.github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
 
     name: P${{ matrix.php }} - ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         name: Check out code
       - name: Set output
         id: vars