Bump undici from 5.28.3 to 5.28.4 in /api_server (#432)

Bumps [undici](https://github.com/nodejs/undici) from 5.28.3 to 5.28.4.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v5.28.3...v5.28.4)

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

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Author: dependabot[bot]

api_server/package-lock.json

@@ -55,7 +55,7 @@
 		"strftime": "0.10.2",
 		"stripe": "8.217.0",
 		"toposort": "2.0.2",
-		"undici": "5.28.3",
+		"undici": "5.28.4",
 		"uuid": "8.3.2",
 		"xregexp": "5.1.1"
 	},