Merge pull request #21 from NodeOS/greenkeeper/prebuild-7.4.0

chore(package): update prebuild to version 7.4.0

Author: piranna

package.json

@@ -51,7 +51,7 @@
   "devDependencies": {
     "buho": "^0.3.0",
     "ci-publish": "^1.3.0",
-    "prebuild": "^6.2.1"
+    "prebuild": "^7.4.0"
   },
   "buho": {
     "type": "DirectoryIndex",