Bump zbus from 4.1.2 to 4.2.1

[dependabot]

Bumps zbus from 4.1.2 to 4.2.1.

Release notes

Sourced from zbus's releases.

🔖 zbus 4.2.1

• 🚑️ Critical fixes:
  • Don't invalidate all properties on change. This fixes a regression in c1aa5c72, where we started to invalidate properties in every PropertyChanged signal. This is wrong anyway but it also meant zbus interfaces breaking against gio. #765
  • Use assert! instead of debug_assert!. debug_assert! is removed in release builds, along with any values computed inside it. This meant that since the use of debug_assert! in commit 7fc3ab7b8f69e21822a0d569222baba4b72de13f, the fdo interfaces weren't getting added for nodes for release profile. Let's use assert! instead. #764
  • Fix 0 byte transfer and parsing regressions for FreeBSD. #756
• 💩 Hack to make connection handshake work inside Flatpak. xdg-dbus-proxy can't handle pipelining, hence we need to handle NEGOTIATE_UNIX_FD command's response before sending out BEGIN command and Hello method call message.
• 🥅 Gracefully handle rejection of UNIX FD passing.
• 🐛 Ensure all messsage bytes received during handshake are used. Don't assume that only a single full message could be received at the end of the client handshake process.
• 📝 Correct logo URL in docs.
• 🚨 Allow dead code in doc samples.
• ⬆️ Update dependencies:
  • serde to 1.0.200.
  • proc-macro2 to 1.0.81.
  • tokio to 1.37.0.

🔖 zbus 4.2.0

• ✨ Make spawning tasks for method call handling, optional. dbus_interface now provides a spawn attribute to control whether the method call handling is spawned as a task or not.
• ✨ Add serial to Message's Debug representation.
• 🔌 Add connection::Builder::authenticated_socket for creating a connection with a pre-authenticated socket. This could also be socket that doesn't need any authentication. #590.
• ✨ Add connection::socket::{ReadHalf::receive_message, WriteHalf::send_message} methods. These method have a default implementation that just uses the lower-level sibling methods. Implementers can either override this method or the lower-level method, depending on the underlying socket they're using.
• ✨ Introducing connection::socket::Channel. This new socket type, uses channels for in-process p2p communication. This can be used with connection::Builder::authenticated_socket to create a connection for in-process communication. #591.
• ⚡️ Pipeline client-side handshake as much as possible, including the Hello method call to the bus. This reduces unnecessary round-trips & hence latencies. #493
• ✨ Add connection::Builder::auth_mechanism. Unlike auth_mechanisms method, this method only allows one mechanism to be set.
• 🗑️ Deprecate connection::Builder::auth_mechansims. In favor of auth_mechansim. This is in preparation for #731, when we will remove this method entirely.
• 🥅 Don't assert on invalid serve_at() usage. Document that standard interfaces are already added. Return an error instead of an explicit panic if attempted, since it is not an internal invariant.
• 🥅 Catch interface handler error.
• 🔊 Reduce the amount of tracing data when adding traces in handlers (duplicated "msg").
• 🔥 Remove now unnecessary hack to ensure ObjectManager signals aren't sent before Hello method.
• 🔊 Instrument all async methods of server handshake.

... (truncated)

Commits

• e023f5d 🔖 zb: Release 4.2.1
• 339f4d0 🔖 zv: Release 4.1.0
• 564a68c Merge pull request #780 from zeenix/flatpak-hack
• 1b1a1dd 💩 zb: Hack to make connection handshake work inside Flatpak
• d2df7e2 🥅 zb: Gracefully handle rejection of UNIX FD passing
• 51d918c Merge pull request #779 from zeenix/properties-changed-fix
• c4630dd ✅ zb: Add a few more assertions in a test case
• 9685163 ✅ zb: Simplify a statement in a test
• a148bbe 🚑️ zb,zm: Don't invalidate all properties on change
• b5e8862 ⬆️ Update serde_json to v1.0.117
• Additional commits viewable in compare view

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[dependabot]

Superseded by #265.