chore(deps): bump undici from 5.12.0 to 5.21.0

Bumps [undici](https://github.com/nodejs/undici) from 5.12.0 to 5.21.0.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v5.12.0...v5.21.0)

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

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

Author: dependabot[bot]