Merge pull request #246 from shochdoerfer/feature/restrict_phpstan_1.6

Do not yet install PHPStan 1.7

Author: shochdoerfer

composer.json

@@ -22,7 +22,7 @@
     "php": "^7.2.0 || ^8.1.0",
     "ext-dom": "*",
     "laminas/laminas-code": "~3.3.0 || ~3.4.1 || ~3.5.1 || ~4.5.0",
-    "phpstan/phpstan": "^1.6.2",
+    "phpstan/phpstan": "^1.6.2 <1.7.0",
     "symfony/finder": "^3.0 || ^4.0 || ^5.0 || ^6.0"
   },
   "conflict": {