chore(package): update http-server to version 0.12.2

Closes #44

Author: greenkeeper[bot]

package.json

@@ -6,7 +6,7 @@
     "cross-env": "^5.2.0",
     "css-loader": "3.0.0",
     "cypress": "^3.2.0",
-    "http-server": "^0.11.1",
+    "http-server": "^0.12.2",
     "mini-css-extract-plugin": "^0.7.0",
     "npm-run-all": "^4.1.5",
     "serve": "^11.0.0",