Bump zbus from 3.15.2 to 5.4.0

Bumps [zbus](https://github.com/dbus2/zbus) from 3.15.2 to 5.4.0.
- [Release notes](https://github.com/dbus2/zbus/releases)
- [Commits](z-galaxy/zbus@zbus-3.15.2...zbus-5.4.0)

---
updated-dependencies:
- dependency-name: zbus
  dependency-version: 5.4.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]