chore(deps): bump the mix-minor group with 2 updates

[dependabot]

Bumps the mix-minor group with 2 updates: phoenix and plug_cowboy.

Updates phoenix from 1.8.8 to 1.8.9

Changelog

Sourced from phoenix's changelog.

1.8.9 (2026-07-07)

Security fixes

• CVE-2026-56811: Add a max_channels_per_transport option (defaulting to 100) to prevent a single client from spawning an unbounded number of channels (processes), eventually exhausting the server's memory or process limit.
• CVE-2026-56812: Prevent presence keys from colliding with Object.prototype properties members, crashing the JS Presence client
• Enforce longpoll batch size introduced in 1.8.6. This is additional hardening against CVE-2026-32689. If your application sends events with a very high frequency and uses long polling, such that a single longpoll request would exceed 100 events, you should update to 1.8.7 first.

Commits

• 734c8d1 Release v1.8.9
• beffc4d fix presence keys colliding with object prototype chain
• 16e295d Limit the number of channels a single transport process can join
• 211ff62 Allow authToken to be a function (#6751)
• 6cb2a83 Enforce longpoll batch size
• 5bf1ce6 Add missing test file
• 046accc Normalize route verb while grouping
• 21d1462 Group routes by verb during compilation (#6739)
• 9d3f1f6 phx.gen.release: Document new Bob Web UI (#6721)
• afcac09 Bump undici from 7.25.0 to 7.28.0 (#6736)
• Additional commits viewable in compare view

Updates plug_cowboy from 2.8.1 to 2.9.0

Changelog

Sourced from plug_cowboy's changelog.

v2.9.0

Enhancements

• Implement get_sock_data from Plug
• Require Plug v1.18+

Commits

• 74dab49 Release v2.9.0
• 45b941f Implement get_sock_data (#115)
• 0ef2cc9 CI housekeeping (#114)
• See full diff in compare view

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[dependabot]

Looks like these dependencies are updatable in another way, so this is no longer needed.