build(deps-dev): update phpstan/phpstan requirement || ^2.0.0 (#1044)

Updates the requirements on [phpstan/phpstan](https://github.com/phpstan/phpstan) to permit the latest version.
- [Release notes](https://github.com/phpstan/phpstan/releases)
- [Changelog](https://github.com/phpstan/phpstan/blob/2.0.x/CHANGELOG.md)
- [Commits](phpstan/phpstan@1.0.0...2.0.3)

---
updated-dependencies:
- dependency-name: phpstan/phpstan
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

composer.json

@@ -29,7 +29,7 @@
         "phpunit/phpunit": "^9.0",
         "mockery/mockery": "^1.4",
         "friendsofphp/php-cs-fixer": "^3.44",
-        "phpstan/phpstan": "^1.0.0",
+        "phpstan/phpstan": "^1.0.0 || ^2.0.0",
         "monolog/monolog": "^2.2",
         "symfony/var-dumper": "^5.1",
         "symfony/http-foundation": "^5.2.0",