build(deps-dev): bump undici from 5.28.4 to 6.19.2

Bumps [undici](https://github.com/nodejs/undici) from 5.28.4 to 6.19.2.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v5.28.4...v6.19.2)

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

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -23,7 +23,7 @@
     "tap": "^16.0.0",
     "tinybench": "^2.5.1",
     "tsd": "^0.31.0",
-    "undici": "^5.28.4"
+    "undici": "^6.19.2"
   },
   "scripts": {
     "benchmark": "node benchmark/benchmark.js",