Build(deps): Bump express from 4.17.1 to 4.17.3

Bumps [express](https://github.com/expressjs/express) from 4.17.1 to 4.17.3.
- [Release notes](https://github.com/expressjs/express/releases)
- [Changelog](https://github.com/expressjs/express/blob/master/History.md)
- [Commits](expressjs/express@4.17.1...4.17.3)

---
updated-dependencies:
- dependency-name: express
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -59,7 +59,7 @@
     "@fortawesome/react-fontawesome": "^0.0.17",
     "airbnb-prop-types": "^2.15.0",
     "classnames": "^2.2.5",
-    "express": "^4.16.3",
+    "express": "^4.17.3",
     "history": "^4.7.2",
     "immutable": "^3.8.1",
     "isomorphic-fetch": "^2.2.1",