Update vercel.json

Author: kawax

vercel.json

@@ -6,7 +6,7 @@
     "builds": [
         {
             "src": "/api/index.php",
-            "use": "vercel-php@0.7.4"
+            "use": "vercel-php@0.9.0"
         },
         {
             "src": "/public/**",
@@ -39,7 +39,6 @@
         "APP_PACKAGES_CACHE": "/tmp/packages.php",
         "APP_ROUTES_CACHE": "/tmp/routes.php",
         "APP_SERVICES_CACHE": "/tmp/services.php",
-        "CACHE_DRIVER": "array",
         "CACHE_STORE": "array",
         "LOG_CHANNEL": "stderr",
         "SESSION_DRIVER": "cookie",