Update workflow

Author: tomas-novotny

.github/workflows/master.yml

@@ -16,7 +16,8 @@ jobs:
           - '8.3'
           - '8.4'
     steps:
-      - uses: actions/checkout@v2
+      - name: Checkout repository
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Set up PHP ${{ matrix.php }}