fix(deps): bump zvariant from 4.2.0 to 5.5.1

Bumps [zvariant](https://github.com/dbus2/zbus) from 4.2.0 to 5.5.1.
- [Release notes](https://github.com/dbus2/zbus/releases)
- [Commits](z-galaxy/zbus@zvariant-4.2.0...zvariant-5.5.1)

---
updated-dependencies:
- dependency-name: zvariant
  dependency-version: 5.5.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Cargo.lock

@@ -41,7 +41,7 @@ tokio-vsock = ["dep:tokio-vsock", "tokio"]
 [dependencies]
 serde = { version = "1.0.219", features = ["derive"] }
 serde_repr = "0.1.20"
-zvariant = { version = "4.2.0", default-features = false, features = [
+zvariant = { version = "5.5.3", default-features = false, features = [
   "enumflags2",
 ] }
 zbus_names = { path = "../zbus_names", version = "3.0" }

crates/zbus/Cargo.toml

@@ -14,7 +14,7 @@ readme = "README.md"
 
 [dependencies]
 serde = { version = "1.0.219", features = ["derive"] }
-zvariant = { version = "4.0.0", default-features = false, features = [
+zvariant = { version = "5.5.3", default-features = false, features = [
     "enumflags2",
 ] }
 static_assertions = "1.1.0"