Bump phpstan/phpstan from 1.12.8 to 2.0.0

Bumps [phpstan/phpstan](https://github.com/phpstan/phpstan) from 1.12.8 to 2.0.0.
- [Release notes](https://github.com/phpstan/phpstan/releases)
- [Changelog](https://github.com/phpstan/phpstan/blob/2.0.x/CHANGELOG.md)
- [Commits](phpstan/phpstan@1.12.8...2.0.0)

---
updated-dependencies:
- dependency-name: phpstan/phpstan
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

composer.json

@@ -19,7 +19,7 @@
     },
     "require-dev": {
         "prestashop/php-dev-tools": "^4.3",
-        "phpstan/phpstan": "^1.9"
+        "phpstan/phpstan": "^2.0"
     },
     "config": {
       "preferred-install": "dist",