gems: update async requirement from ~> 1.31.0 to >= 1.31, < 2.36

[dependabot]

Updates the requirements on async to permit the latest version.

Changelog

Sourced from async's changelog.

v2.35.0

• Process.fork is now properly handled by the Async fiber scheduler, ensuring that the scheduler state is correctly reset in the child process after a fork. This prevents issues where the child process inherits the scheduler state from the parent, which could lead to unexpected behavior.

v2.34.0

Kernel::Barrier Convenience Interface

Starting multiple concurrent tasks and waiting for them to finish is a common pattern. This change introduces a small ergonomic helper, Barrier, defined in Kernel, that encapsulates this behavior: it creates an Async::Barrier, yields it to a block, waits for completion (using Sync to run a reactor if needed), and ensures remaining tasks are stopped on exit.

require "async"
Barrier do |barrier|
3.times do |i|
barrier.async do |task|
sleep(rand * 0.1)  # Simulate work
puts "Task #{i} completed"
end
end
end
All tasks are guaranteed to complete or be stopped when the block exits.

If an exception is raised by a task, it will be propagated to the caller, and any remaining tasks will be stopped. The parent: parameter can be used to specify a parent task for the barrier, otherwise it will use the current task if available, or create a new reactor if not.

v2.33.0

• Introduce Async::Promise.fulfill for optional promise resolution.

v2.32.1

• Fix typo in documentation.

v2.32.0

• Introduce Queue#waiting_count and PriorityQueue#waiting_count. Generally for statistics/testing purposes only.

v2.31.0

• Introduce Async::Deadline for precise timeout management in compound operations.

v2.30.0

• Add timeout support to Async::Queue#dequeue and Async::Queue#pop methods.
• Add timeout support to Async::PriorityQueue#dequeue and Async::PriorityQueue#pop methods.
• Add closed? method to Async::PriorityQueue for full queue interface compatibility.
• Support non-blocking operations using timeout: 0 parameter.

... (truncated)

Commits

• dc0d27c Bump minor version.
• 10f3695 Modernize code.
• b3764e6 Add support for Process.fork within an active scheduler. (#437)
• ea8b072 fix queues example block end
• 9cbf6ad Remove tea.
• 645ed4c Explicit OpenSSL dependency version.
• 2cb1f53 Fix tests.
• 6d1905b Add link to toolbox.
• a093f3a Fix typo.
• 1688204 Update best practices usage for Barrier.
• Additional commits viewable in compare view

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