migration to php 8.0

Author: Pechynho

composer.json

@@ -12,14 +12,11 @@
     }
   ],
   "require": {
-    "php": "^7.4",
-    "ext-mbstring": "*",
-    "symfony/property-access": "^5.1",
-    "doctrine/annotations": "^1.10"
+    "php": "^8.0",
+    "ext-mbstring": "*"
   },
   "require-dev": {
-    "phpunit/phpunit": ">=6.0 <8.0",
-    "vladahejda/phpunit-assert-exception": "^1.3"
+    "phpunit/phpunit": "^9.5"
   },
   "autoload": {
     "psr-4": {