update dependencies

Author: bartveneman

package.json

@@ -45,14 +45,14 @@
     ]
   },
   "devDependencies": {
-    "ava": "^1.3.1",
+    "ava": "^1.4.1",
     "chromium": "^2.1.0",
-    "create-test-server": "^2.4.0",
-    "prettier": "^1.16.4",
-    "puppeteer-core": "^1.13.0",
+    "create-test-server": "^3.0.1",
+    "prettier": "^1.17.1",
+    "puppeteer-core": "^1.17.0",
     "xo": "^0.24.0"
   },
   "dependencies": {
-    "puppeteer": "^1.13.0"
+    "puppeteer": "^1.17.0"
   }
 }