chore(deps): bump undici from 6.21.1 to 6.21.2

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

---
updated-dependencies:
- dependency-name: undici
  dependency-version: 6.21.2
  dependency-type: direct:production
...

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

Author: dependabot[bot]

package-lock.json

@@ -59,7 +59,7 @@
     "openapi-sampler": "^1.6.1",
     "outdent": "^0.8.0",
     "set-cookie-parser": "^2.3.5",
-    "undici": "^6.21.1"
+    "undici": "^6.21.2"
   },
   "files": [
     "lib"