build(deps): bump github.com/nats-io/nats-server/v2 from 2.10.12 to 2.11.15

[dependabot]

Bumps github.com/nats-io/nats-server/v2 from 2.10.12 to 2.11.15.

Release notes

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

Release v2.11.15

Changelog

Refer to the 2.11 Upgrade Guide for backwards compatibility notes with 2.10.x.

Go Version

• 1.25.8

Dependencies

• golang.org/x/crypto v0.49.0 (#7953)
• github.com/nats-io/jwt/v2 v2.8.1 (#7960)
• github.com/antithesishq/antithesis-sdk-go v0.6.0-default-no-op
• github.com/klauspost/compress v1.18.4
• github.com/nats-io/nats.go v1.49.0
• github.com/nats-io/nkeys v0.4.15

CVEs

• Fixes CVE-2026-33216, CVE-2026-33217, CVE-2026-33215 (affecting systems using MQTT)
• Fixes CVE-2026-33246 (affects systems using leafnodes and service imports)
• Fixes CVE-2026-33218 (affects systems using leafnodes)
• Fixes CVE-2026-33219 (affects systems using WebSockets)
• Fixes CVE-2026-33223, CVE-2026-33222 (affects systems using JetStream)
• Fixes CVE-2026-33248 (affects systems using mutual TLS)
• Fixes CVE-2026-33247 (affects systems providing credentials on the command line)
• Fixes CVE-2026-33249 (affects systems where client publish permissions should be restricted)

Improved

JetStream

• The stream peer-remove command now accepts a peer ID as well as a server name (#7952)

MQTT

• Protocol compliance has been improved, including more error handling on invalid or malformed MQTT packets (#7933)

Fixed

General

• Improved handling of duplicate headers
• A correctness bug when validating relative distinguished names has been fixed
• Secrets are now redacted correctly in trace logging (#7942)
• The expvar endpoint on the monitoring port now correctly redacts secrets from the command line arguments
• Trace headers are no longer incorrectly parsed when hitting max payload (#7954)
• The Nats-Trace-Dest message header for message tracing now requires that the client have publish permissions to the specified subject, an error is returned otherwise

... (truncated)

Commits

• bef17e1 Release v2.11.15
• e349b31 Cherry-picks for 2.11.15 (#62)
• 782a6df [FIXED] Avoid stalling read loop on leafnode ErrMinimumVersionRequired
• 74a5f6f Remove FIXME about auth callout nonce
• ea8ae87 Message tracing requires client publish permission for Nats-Trace-Dest
• 3fd43a0 Rebuild request info headers on leaf service imports
• 8dbf004 [FIXED] MQTT flappers use monotonic time
• 265a99b Update JWT and other dependencies
• d6d1dd9 Streaming parsing of WebSocket frames with limited memory allocations
• e6057af [FIXED] Avoid parsing trace headers from HPUB payload
• Additional commits viewable in compare view

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