chore(deps): update rust crate zvariant to 5.11.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
zvariant	workspace.dependencies	minor	5.10.1 → 5.11.0

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Release Notes

z-galaxy/zbus (zvariant)

v5.11.0: 🔖 zbus 5.11.0

Compare Source

• ✨ API to specify timeouts for method calls. Add a way to specify an timeout for method calls. If
  set, the method calls will timeout after the specified duration, returning an error. This can be
  used to handle the issues with non-answering D-Bus services.
• 🩹 Add connection::socket::Split::new method, allowing Socket trait impls outside zbus.
• 📝 Mention receive_X_changes in proxy docs.

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