fix(package): update prebuild-install to version 5.2.1 (#286)

Author: greenkeeper[bot]

package.json

@@ -10,7 +10,7 @@
   },
   "dependencies": {
     "nan": "^2.10.0",
-    "prebuild-install": "5.2.0"
+    "prebuild-install": "5.2.1"
   },
   "devDependencies": {
     "electron-mocha": "^6.0.0",