chore(deps-dev): bump heroku/heroku-buildpack-php from 256 to 257 in /buildpacks/buildpack-php/tests/php

[dependabot[bot]]

Bumps heroku/heroku-buildpack-php from 256 to 257.

Changelog

Sourced from heroku/heroku-buildpack-php's changelog.

[v257] - 2024-09-27

ADD

• PHP/8.1.30 [David Zuelke]
• PHP/8.2.24 [David Zuelke]
• PHP/8.3.12 [David Zuelke]
• ext-ev/1.2.0 [David Zuelke]
• ext-blackfire/1.92.23 [David Zuelke]
• ext-apcu/5.1.24 [David Zuelke]
• ext-mongodb/1.20.0 [David Zuelke]

CHG

• Composer/2.7.9 [David Zuelke]
• Blackfire/2.28.12 [David Zuelke]

Commits

• 60dd468 Prepare release v257 (#759)
• 6c8e337 Merge pull request #758 from heroku/2024-09-updates
• eaa05f2 ext-mongodb/1.20.0
• d4f8d68 ext-apcu/5.1.24
• eac182d ext-blackfire/1.92.23
• c2c02b2 ext-mongodb/1.19.4
• e8aa1e6 ext-ev/1.2.0
• 726f263 Blackfire/2.28.12
• 3cac005 Composer/2.7.9
• 6076512 PHP/8.3.12
• Additional commits viewable in compare view

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