Bump automattic/jetpack-config from 1.15.3 to 1.15.4 (#11047)

Bumps [automattic/jetpack-config](https://github.com/Automattic/jetpack-config) from 1.15.3 to 1.15.4.
- [Release notes](https://github.com/Automattic/jetpack-config/releases)
- [Changelog](https://github.com/Automattic/jetpack-config/blob/trunk/CHANGELOG.md)
- [Commits](Automattic/jetpack-config@v1.15.3...v1.15.4)

---
updated-dependencies:
- dependency-name: automattic/jetpack-config
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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