chore: bump github.com/nats-io/nats-server/v2 from 2.14.3 to 2.14.4

[dependabot]

Bumps github.com/nats-io/nats-server/v2 from 2.14.3 to 2.14.4.

Release notes

Sourced from github.com/nats-io/nats-server/v2's releases.

Release v2.14.4

Changelog

Refer to the 2.14 Upgrade Guide for backwards compatibility notes with 2.12.x. Please note that the 2.13.x version was skipped.

Go Version

• 1.26.5 (#8435)

Dependencies

• github.com/klauspost/compress v1.19.0 (#8385)
• golang.org/x/crypto v0.54.0 (#8385)
• golang.org/x/sys v0.47.0 (#8385)
• github.com/antithesishq/antithesis-sdk-go v0.7.2-default-no-op (#8385)

Improved

JetStream

• The Raft transport layer has been decoupled, improves testing but does not change server behaviour (#8181)
• The disk concurrency semaphore has been increased to 4096 slots, up from the previous CPU-scaled count (#8336)
• The disk concurrency semaphore can now be configured with the max_concurrent_io option in the jetstream config block (#8336)
• Filestore underlying block cache buffers are now recycled to the pool when the weak reference is collected by the GC, which should smooth out memory usage with some usage patterns (#8395)
• Calculating and looking up sequences in delete maps for file-backed streams with large numbers of interior deletes is now faster and holds locks for less time (#8403)
• Inserts, iterations and deletes in AVL sequence sets are now faster in many cases, which speeds up the tracking of interior deletes (#8406)
• Stream snapshots now attempt to determine the correct encode buffer size up front, avoiding many unnecessary allocations on streams with large numbers of interior deletes (#8405)
• Reduced memory usage of the structure that is used to track subjects within a stream (#8412)

Fixed

General

• allow_non_tls will no longer log an incorrect message at startup claiming that TLS is required (#8420)
• Combining no_auth_user with auth callouts will no longer skip authentication checks when no CONNECT message is sent
• JWT validation no longer crashes the server with whitespace-only permissions
• Several paths that enforce the permissions of queue subscriptions no longer treat the whole permission as a subject literal
• Several JetStream and MQTT endpoints now correctly guard against null values in JSON
• Fixed an authentication bypass with TLS verify_and_map authenticating users with blank passwords

Monitoring

• The healthz endpoint will now skip and no longer report on expired JWT accounts (#8379, thanks to @​ByapakSigdel)
• The varz endpoint will now correctly report JetStream limits after they were changed via a config reload (#8394)

JetStream

• Malformed cluster replicated acks or delivered updates are now correctly rejected by the decoder (#8284, thanks to @​uwezkhan)
• Malformed cluster replicated skip or reset updates are now correctly rejected by the decoder (#8345, thanks to @​uwezkhan)
• Empty cluster replicated entries are now correctly ignored (#8347, thanks to @​uwezkhan)

... (truncated)

Commits

• bbd6dc5 Release v2.14.4
• 7d26d07 Update to Go 1.26.5/1.25.12
• c7163b2 Release v2.14.4-RC.4
• ee56a6c Cherry-picks for 2.14.4-RC.4 (#147)
• 725f008 [FIXED] Certificate users authenticatable by username on other listeners
• 566e772 [FIXED] Block MQTT subscriptions to internal MQTT subjects
• 43607c4 [FIXED] Consumer assignment proposed without a raft group
• 3b90b2c [FIXED] Panic setting up a stream source/mirror on malformed create response
• f44c537 [FIXED] Panic decoding MQTT retained messages, sessions and JS API replies
• c6c7061 [FIXED] Panic decoding counter source with null entry
• Additional commits viewable in compare view

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