Bump undici in the npm_and_yarn group across 1 directory (#315)

Bumps the npm_and_yarn group with 1 update in the / directory: [undici](https://github.com/nodejs/undici).


Updates `undici` from 6.21.1 to 6.21.3
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v6.21.1...v6.21.3)

---
updated-dependencies:
- dependency-name: undici
  dependency-version: 6.21.3
  dependency-type: indirect
  dependency-group: npm_and_yarn
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Kurt Garloff <[email protected]>

Author: dependabot[bot]