build(deps-dev): bump undici from 6.21.1 to 6.21.2 (#3811)

Bumps [undici](https://github.com/nodejs/undici) from 6.21.1 to 6.21.2.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](https://github.com/nodejs/undici/compare/v6.21.1...v6.21.2)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -58,6 +58,6 @@
     "prettier": "^3.5.3",
     "ts-jest": "^29.2.6",
     "typescript": "^5.8.2",
-    "undici": "^6.21.1"
+    "undici": "^6.21.2"
   }
 }