Bump express from 4.16.3 to 4.17.3

Bumps [express](https://github.com/expressjs/express) from 4.16.3 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@4.16.3...4.17.3)

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

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

package.json

@@ -72,7 +72,7 @@
     "dotenv": "^5.0.1",
     "entities": "1.1.1",
     "escape-html": "1.0.3",
-    "express": "^4.16.3",
+    "express": "^4.17.3",
     "express-request-id": "1.1.0",
     "express-statsd": "0.3.0",
     "hot-shots": "^6.1.1",