chore: relax php client test script

Author: marcohefti

package.json

@@ -9,7 +9,7 @@
     "test": "tests"
   },
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "echo \"No tests specified\""
   },
   "keywords": [],
   "author": "",