chore(deps): bump undici from 5.26.4 to 5.29.0 in /dev/coverage-action

Bumps [undici](https://github.com/nodejs/undici) from 5.26.4 to 5.29.0.
- [Release notes](https://github.com/nodejs/undici/releases)
- [Commits](nodejs/undici@v5.26.4...v5.29.0)

---
updated-dependencies:
- dependency-name: undici
  dependency-version: 5.29.0
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]