build(deps): bump undici from 6.14.1 to 6.15.0 (#2873)

Bumps [undici](https://github.com/nodejs/undici) from 6.14.1 to 6.15.0.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v6.14.1...v6.15.0)

---
updated-dependencies:
- dependency-name: undici
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -35,7 +35,7 @@
     "@octokit/plugin-paginate-rest": "^5.0.1",
     "@octokit/plugin-rest-endpoint-methods": "^6.8.1",
     "proxy-from-env": "^1.1.0",
-    "undici": "^6.14.1",
+    "undici": "^6.15.0",
     "uuid": "^9.0.1"
   },
   "devDependencies": {