Merge pull request #21 from wifitvbox/dependabot/npm_and_yarn/express-4.17.3

Bump express from 4.16.3 to 4.17.3

Author: wifitvbox

package.json

@@ -19,7 +19,7 @@
  "compression": "^1.7.1",
  "cross-env": "^5.1.1",
  "es6-promise": "^4.1.1",
- "express": "^4.16.2",
+ "express": "^4.17.3",
  "extract-text-webpack-plugin": "^3.0.2",
  "firebase": "4.6.2",
  "lru-cache": "^4.1.1",