chore(deps): update dependency phoenix to v1.8.8

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
phoenix (source)	prod	patch	1.8.5 → 1.8.8

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Release Notes

phoenixframework/phoenix (phoenix)

v1.8.8

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Enhancements

• [phx.new] Use LiveView 1.2.0

v1.8.7

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Bug fixes

• Fix invalid status when longpoll request times out

Enhancements

• Mask token parameter in logs by default (in addition to "password")

JavaScript Client Bug Fixes

• Fix encoding of non-ASCII metadata in binary channel messages

v1.8.6

Compare Source

Security fixes

• CVE-2026-32689: Fix Phoenix.Socket Longpoll transport memory exhaustion in nd-JSON body splitting

Enhancements

• [phoenix] Raise if use Phoenix.VerifiedRoutes is called multiple times in the same module
• [phoenix] Fix more deprecation and type checker warnings on Elixir 1.20
• [phoenix] Raise when interpolating a list in Phoenix.VerifiedRoutes (#​6632)
• [phoenix] Gracefully handle non-binary vsn socket parameter (#​6662)
• [phx.gen.*] Use .eex filename suffix in generator files
• [phx.new] Add interactive mode: mix phx.new --interactive (#​6630)
• [phx.new] Add phx-no-format to generated <.live_title> tag (#​6667)

Bug fixes

• [phx.gen.*] Fix generated migrations for myxql when using scopes (#​6635)
• [phx.new] Fix crash when parent directory contains a colon (#​6633)

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⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

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The artifact failure details are included below:

File name: mix.lock

Command failed: install-tool elixir v1.20.1