build: Bump zbus from 3.15.2 to 4.1.2

Bumps [zbus](https://github.com/dbus2/zbus) from 3.15.2 to 4.1.2.
- [Release notes](https://github.com/dbus2/zbus/releases)
- [Commits](dbus2/zbus@zbus-3.15.2...zbus-4.1.2)

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

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