Bump dependencies, fix vulnerabilities

package.json

@@ -18,10 +18,10 @@
     "prepublishOnly": "npm run build"
   },
   "devDependencies": {
-    "@zeit/ncc": "^0.16.1",
+    "@zeit/ncc": "^0.18.5",
     "benchmark": "^2.1.4",
-    "serve-marked": "^1.0.0",
+    "serve-marked": "^2.0.0",
     "standard": "^12.0.0",
-    "tap": "^12.6.1"
+    "tap": "^14.2.2"
   }
 }