chore(deps): bump lapin from 3.7.2 to 4.0.0 in /reference-apps/rust

[dependabot]

Bumps lapin from 3.7.2 to 4.0.0.

Changelog

Sourced from lapin's changelog.

4.0.0 (2026-02-08)

Breaking changes

• Make more use of protocol types in public api (mostly ShortString and LongString)
• Automatic connection recovery is now done through ConnectionProperties::enable_auto_recover()
• Automatic connection recovery is no longer feature-gated by the unstable feature (which has been removed)
• Automatic channel recovery is gone. Channels will still be recovered during connection recovery, but not outside of this scenario.

Features

• New feature flags to control default runtime (tokio, smol)
• Removed deprecated on_error callback setup. Use Connection::events_listener instead.
• Runtime is now configured in the Connection::connect_with_runtime method
• Connection::block and Connection:unblock have been removed (they were actually a protocol violation)
• Replaced Acker::mock with Delivery::mock
• Changed Connection::collector callback to an async fn
• Added an AuthProvider mechanism configurable through ConnectionProperties (to support e.g. automatic oauth2 token refresh)

Misc

• Switched our async runtimes integration from executor-trait and reactor-trait to async-rs
• Update amq-protocol to 10.0

Commits

• 3a41c7b v4.0.0
• fff335b update amq-protocol to 10.0.0
• 077671d silence newer clippy warnings
• 83b5da9 update flume to 0.12
• 91ea7a9 Merge branch 'lapin-3.x'
• a3c9802 Stabilize automatic connection recovery
• b9f219b update Cargo.lock
• 99d546f update backon to 1.6
• 40518a2 Merge branch 'lapin-3.x'
• 1b6db12 v4.0.0-rc.1
• Additional commits viewable in compare view

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