Bump dbus-tree from 0.9.1 to 0.9.2

Bumps [dbus-tree](https://github.com/diwic/dbus-rs) from 0.9.1 to 0.9.2.
- [Release notes](https://github.com/diwic/dbus-rs/releases)
- [Commits](https://github.com/diwic/dbus-rs/compare/dbus-tree-v0.9.1...dbus-tree-v0.9.2)

---
updated-dependencies:
- dependency-name: dbus-tree
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Cargo.lock

@@ -687,9 +687,9 @@ dependencies = [
 
 [[package]]
 name = "dbus-tree"
-version = "0.9.1"
+version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b15e1727e94490a9e0c1174284ea83fe5e6db853b43cda77d99bb371008a4fd0"
+checksum = "f456e698ae8e54575e19ddb1f9b7bce2298568524f215496b248eb9498b4f508"
 dependencies = [
  "dbus",
 ]