build(deps): bump piscina (#25081)

Bumps [piscina](https://github.com/piscinajs/piscina) from 4.9.2 to 4.9.4.
- [Release notes](https://github.com/piscinajs/piscina/releases)
- [Changelog](https://github.com/piscinajs/piscina/blob/v4.9.4/CHANGELOG.md)
- [Commits](piscinajs/piscina@v4.9.2...v4.9.4)

---
updated-dependencies:
- dependency-name: piscina
  dependency-version: 4.9.4
  dependency-type: indirect
...

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

Author: dependabot[bot]