Bump tuber from 0.5.1 to 0.6.0

[dependabot]

Bumps tuber from 0.5.1 to 0.6.0.

Changelog

Sourced from tuber's changelog.

0.6.0 (September 16 2026)

Reconnection release. The gem retried reconnects but not connects, so a consumer that caught Tuber::NotConnected and built a new client — the obvious thing to write — never reached the retrying path, and a server restart of a few seconds was enough to kill it. reconnect! makes the existing healing reachable, and connect_retries gives a cold start a window wider than the outage. Existing behaviour is unchanged until connect_retries is raised, with two exceptions noted below: NotConnected messages gained a suffix (the historical text remains a strict prefix), and a connect error other than ECONNREFUSED is now retried and surfaced as NotConnected rather than escaping as a raw Errno.

• Add Tuber#reconnect! / Connection#reconnect!: re-establishes the connection and replays its tube state (watched tubes with their weights, the used tube, the reserve mode). This healing only ever ran when the connection itself noticed a dropped socket, so a consumer that caught Tuber::NotConnected had no way to reach it and had to build a new client — which starts with no tube state and has to re-watch and re-weight every tube by hand.
• Add connect_retries and connect_retry_interval configuration. The initial connect took exactly one attempt with no retry, so a cold start during a server restart — a web boot, a fresh Tuber.new, a daemon rebuilding its client after an error — failed where an established connection would have healed. Defaults to the historical single attempt; raising it also lifts the reconnect budget of connections already established, so one knob covers both.
• Retry a connect that fails for any reason the server might be unreachable (ETIMEDOUT, EHOSTUNREACH, ENETUNREACH, DNS failure, connect timeout), not only ECONNREFUSED. Those previously escaped as a raw Errno from the middle of a reconnect, a class no consumer thinks to rescue.
• Tuber::NotConnected now names the underlying error in its message and keeps it as the exception's cause. A bare rescue collapsed every connect failure into "Connection to beanstalk '...' is closed!", hiding whether the server refused, timed out, or was never resolved — exactly what you need during an outage.
• Connection#close no longer raises if the socket cannot be closed cleanly; the connection is gone either way and reconnect! must not fail on the way to replacing it.
• Fix a reconnect silently dropping per-tube weights and the connection's reserve mode (#1). Both are per-connection server state that a fresh socket resets, so a consumer that healed across a brief server restart kept working but quietly fell back to FIFO. Connection now remembers the weight each tube was watched with and the mode set by Tubes#reserve_mode, and replays them (watch, then ignore default, then reserve-mode) when re-initialising tubes.
• Fix _initialize_tubes sending ignore default after a reconnect even when default was one of the watched tubes, which dropped it from the watch list.
• Connection#add_to_watched now takes an optional weight as a second argument, and Connection#tube_weights / Connection#reserve_mode expose the replayed state.

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