chore(deps-dev): Bump undici from 6.19.7 to 6.21.1 (#3596)

Bumps [undici](https://github.com/nodejs/undici) from 6.19.7 to 6.21.1.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v6.19.7...v6.21.1)

---
updated-dependencies:
- dependency-name: undici
  dependency-type: indirect
...

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