Bump phpstan/phpstan from 2.1.54 to 2.1.55

---
updated-dependencies:
- dependency-name: phpstan/phpstan
  dependency-version: 2.1.55
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

composer.json

@@ -3,7 +3,7 @@
         "php": ">=8.1",
         "justinrainbow/json-schema": "^5.3",
         "php-parallel-lint/php-parallel-lint": "1.4",
-        "phpstan/phpstan": "2.1.54",
+        "phpstan/phpstan": "2.1.55",
         "phpstan/phpstan-deprecation-rules": "2.0.4",
         "phpstan/phpstan-phpunit": "2.0.16",
         "phpstan/phpstan-strict-rules": "2.0.11",