chore(deps): bump zbus from 5.14.0 to 5.15.0

Bumps [zbus](https://github.com/z-galaxy/zbus) from 5.14.0 to 5.15.0.
- [Release notes](https://github.com/z-galaxy/zbus/releases)
- [Changelog](https://github.com/z-galaxy/zbus/blob/main/release-plz.toml)
- [Commits](z-galaxy/zbus@zbus-5.14.0...zbus-5.15.0)

---
updated-dependencies:
- dependency-name: zbus
  dependency-version: 5.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -15,6 +15,6 @@ iced_zbus_notification = { version = "0.4.4", path = "iced_zbus_notification" }
 futures = "0.3.32"
 serde = { version = "1.0.228", features = ["derive"] }
 url = "2.5.8"
-zbus = { version = "5.14.0", default-features = false, features = ["tokio"] }
+zbus = { version = "5.15.0", default-features = false, features = ["tokio"] }
 futures-util = "0.3.32"
 async-trait = "0.1.89"