build(deps): bump react-app-rewired from 2.1.8 to 2.1.9 in /web

Bumps [react-app-rewired](https://github.com/timarney/react-app-rewired) from 2.1.8 to 2.1.9.
- [Release notes](https://github.com/timarney/react-app-rewired/releases)
- [Commits](https://github.com/timarney/react-app-rewired/compare/2.1.8...v2.1.9)

---
updated-dependencies:
- dependency-name: react-app-rewired
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

web/package.json

@@ -20,7 +20,7 @@
     "less-loader": "^7.3.0",
     "prettier": "^2.5.1",
     "react": "^17.0.2",
-    "react-app-rewired": "^2.1.8",
+    "react-app-rewired": "^2.1.9",
     "react-dom": "^17.0.2",
     "react-router-dom": "^5.3.0",
     "react-scripts": "^4.0.3",