feat: update to phpstan 1.0.0 (#28)

Author: t-heuser

composer.json

@@ -23,21 +23,21 @@
   "minimum-stability": "stable",
   "require": {
     "php": "^7.4|^8.0",
-    "phpstan/phpstan": "^0.12",
+    "phpstan/phpstan": "^1.0.0",
     "symfony/polyfill-php80": "^1",
     "thecodingmachine/safe": "^1"
   },
   "require-dev": {
     "phpstan/extension-installer": "^1.1",
-    "phpstan/phpstan-strict-rules": "^0.12.11",
+    "phpstan/phpstan-strict-rules": "^1.0.0",
     "phpmd/phpmd": "^2.10",
-    "ergebnis/phpstan-rules": "^0.15.3",
-    "phpstan/phpstan-deprecation-rules": "^0.12.6",
+    "ergebnis/phpstan-rules": "^1.0.0",
+    "phpstan/phpstan-deprecation-rules": "^1.0.0",
     "roave/security-advisories": "dev-latest",
-    "phpstan/phpstan-phpunit": "^0.12.22",
+    "phpstan/phpstan-phpunit": "^1.0.0",
     "oneserv/phpcs-rules": "^1.0",
     "dg/bypass-finals": "^1.3",
-    "thecodingmachine/phpstan-safe-rule": "^1.0",
+    "thecodingmachine/phpstan-safe-rule": "^1.1.0",
     "madewithlove/license-checker": "^0.10.0",
     "phpunit/phpunit": "^9.5"
   },