build(deps-dev): 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:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package.json

@@ -14,7 +14,7 @@
     "@hapi/hapi": "19.1.1",
     "@types/node": "12.12.34",
     "aws-lambda": "1.0.5",
-    "express": "4.17.1",
+    "express": "4.17.3",
     "koa": "2.11.0",
     "lerna": "^3.22.0",
     "rimraf": "3.0.2"