🔖 zbus_xmlgen 4.1.0

• 🚑️ Always use owned types for signal args. We started doing this already in 2.0 but it
  didn't cover all cases and we still sometimes end up with types that do not implement
  serde::Deserialize. As a side-effect, this now also turns some of the normal method args to
  take references instead of values, which is a good thing. #412
• 🔥 Remove unneeded imports.
• ✅ zx: Add more tests for signals.
• ⬆️ Update clap to 4.5.
• ⬆️ Update pretty_assertions to 1.4.