build(deps): Bump finch from 0.21.0 to 0.22.0

[dependabot]

Bumps finch from 0.21.0 to 0.22.0.

Changelog

Sourced from finch's changelog.

v0.22.0 (2026-05-12)

Added

• Add a new :http2 configuration section with :wait_for_server_settings?, :ping_interval, :max_connection_age, and :max_connection_age_jitter support #354 #355 #364
• Add http+unix:// and https+unix:// URL scheme support for cleaner Unix socket pool configuration #351
• Add pool tagging support for connection pool isolation #342
• Add dynamic and user-managed pool APIs with Finch.start_pool/3, Finch.find_pool/2, and Finch.Pool.child_spec/1 #352
• Add Finch.is_request_ref/1 for matching async request refs in guards #350
• Add configurable pool worker selection strategies via :pool_strategy #359
• Add runtime pool resizing with Finch.get_pool_count/2 and Finch.set_pool_count/3 #362
• Add pid, max_concurrent_streams, and available_connections to pool metrics #362 #368
• Support {:stream, req_body_fun} request bodies in Finch.stream_while/5 on HTTP/1 #357 #360
• Encapsulate pool identity using a Finch.Pool struct #338
• Add Elixir 1.20 support #346

Changed

• Require Elixir v1.15 #358
• Refactor pool management to use per-pool supervisors and registry-backed tracking #344
• Pool metrics now return Finch.Pool.t() structs as keys and use ordered-set ETS tables for prefix lookups #342 #368
• Register only ready HTTP/2 connections, returning :pool_not_available when no connected pool is available #356
• Standardize error handling with Finch.error(), Finch.HTTPError, and Finch.TransportError #341
• Validate keyword options in Finch.build/5 and Finch.request/3 #365
• Use Mint 1.8 #341

Deprecated

• Deprecate {scheme, {:local, path}} tuple form in :pools, use URL strings (e.g. "http+unix:///path") instead #351

Removed

• Remove deprecated Finch.request/6 function, pool configuration options, and :max_idle_time_exceeded telemetry event #348

Fixed

• Do not exceed max failure count to stop overflows #343
• Clean up pool metrics when pools terminate or resize #362
• Prevent atom creation for non-existent Finch instances #342
• Make flaky CI assertions more reliable #340
• Prevent HTTP/1 pools from being considered idle immediately after fresh checkouts #372

Other

• Improve documentation around pool :count, :size, and strategies #361
• Document Finch.build/5 options #347
• CI: update the Elixir 1.20 release candidate to 1.20.0-rc.4

Commits

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