Bump express from 4.17.1 to 4.17.3 in /frontend

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] <support@github.com>

frontend/package.json

@@ -22,7 +22,7 @@
         "apexcharts": "^3.23.1",
         "chart.js": "^2.9.3",
         "diff": "^5.0.0",
-        "express": "^4.17.1",
+        "express": "^4.17.3",
         "http-proxy-middleware": "^1.0.5",
         "libphonenumber-js": "^1.7.56",
         "lodash": "^4.17.21",