Update test-php.yml

updated cache@v1 to cache@v4

Author: vytisbulkevicius

.github/workflows/test-php.yml

@@ -60,7 +60,7 @@ jobs:
 
       # setup the node cache (node_modules) with github actions cache
       - name: Cache Node - npm
-        uses: actions/cache@v1
+        uses: actions/cache@v4
         with:
           path: ~/.npm
           key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}