chore(deps): bump chai from 3.4.1 to 4.2.0 in /api-server

Bumps [chai](https://github.com/chaijs/chai) from 3.4.1 to 4.2.0.
- [Release notes](https://github.com/chaijs/chai/releases)
- [Changelog](https://github.com/chaijs/chai/blob/master/History.md)
- [Commits](chaijs/chai@3.4.1...4.2.0)

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

api-server/package.json

@@ -20,7 +20,7 @@
     "axios": "^0.19.2",
     "bad-words": "^3.0.3",
     "body-parser": "^1.19.0",
-    "chai": "~3.4.1",
+    "chai": "~4.2.0",
     "compression": "^1.7.4",
     "connect-mongo": "^3.2.0",
     "cookie-parser": "^1.4.5",