chore: update composer dependencies, fix php-cs-fixer deprecation

[turegjorup]

Summary

• `composer update` — minor/patch bumps; no security advisories; `composer.json` validates strict.
• Replace the deprecated `PHP_CS_FIXER_IGNORE_ENV=1` env var on the coding-standards scripts with `$config->setUnsupportedPhpVersionAllowed(true)` in `.php-cs-fixer.dist.php` (supported replacement; the env var is removed in php-cs-fixer 4.0).

Files Changed

• `composer.lock` — dependency updates
• `composer.json` — drop `PHP_CS_FIXER_IGNORE_ENV=1` from `coding-standards-apply` / `coding-standards-check` scripts
• `.php-cs-fixer.dist.php` — set `setUnsupportedPhpVersionAllowed(true)` on the Config

Test Plan

• `docker compose exec phpfpm composer coding-standards-check` — 0 fixes needed; no more `PHP_CS_FIXER_IGNORE_ENV` deprecation banner.
• `docker compose exec phpfpm composer tests` — 44/44 green.
• `docker compose exec phpfpm vendor/bin/phpstan analyse src` — OK.
• `docker compose exec phpfpm composer audit` — no advisories.
• `docker compose exec phpfpm composer update-api-spec` — no diff (no API changes).

[github-actions]

API Specification - Non-breaking changes

API Changelog 1.0.0 vs. 1.0.0

No changes detected

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
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Additional details and impacted files

@@            Coverage Diff             @@
##             develop      #78   +/-   ##
==========================================
  Coverage           ?   41.63%           
  Complexity         ?      866           
==========================================
  Files              ?      125           
  Lines              ?     2738           
  Branches           ?        0           
==========================================
  Hits               ?     1140           
  Misses             ?     1598           
  Partials           ?        0           

Flag	Coverage Δ
unittests	41.63% <ø> (?)

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