fix: bump node-gyp for hoek fix

Closes #2355

Author: nschonni

package.json

@@ -66,7 +66,7 @@
     "meow": "^3.7.0",
     "mkdirp": "^0.5.1",
     "nan": "^2.10.0",
-    "node-gyp": "^3.3.1",
+    "node-gyp": "^3.8.0",
     "npmlog": "^4.0.0",
     "request": "2.87.0",
     "sass-graph": "^2.2.4",