chore(deps-dev): bump undici from 5.28.2 to 6.6.1

Bumps [undici](https://github.com/nodejs/undici) from 5.28.2 to 6.6.1.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v5.28.2...v6.6.1)

---
updated-dependencies:
- dependency-name: undici
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

package.json

@@ -48,7 +48,7 @@
     "tough-cookie": "^4.1.3",
     "ts-node": "^10.9.2",
     "typescript": "^5.3.3",
-    "undici": "^5.28.2"
+    "undici": "^6.6.1"
   },
   "dependencies": {
     "basic-auth": "^2.0.1",