PHP version fixed

Author: Spomky

composer.json

@@ -22,7 +22,7 @@
         }
     },
     "require": {
-        "php": "^7.1|^8.0"
+        "php": ">=7.1"
     },
     "require-dev": {
         "php-coveralls/php-coveralls": "^2.0",
@@ -31,11 +31,6 @@
         "phpstan/phpstan-deprecation-rules": "^0.11",
         "phpstan/phpstan-phpunit": "^0.11",
         "phpstan/phpstan-strict-rules": "^0.11",
-        "phpunit/phpunit": "^7.0|^8.0"
-    },
-    "extra": {
-        "branch-alias": {
-            "dev-master": "2.0.x-dev"
-        }
+        "phpunit/phpunit": "^7.0|^8.0|^9.0"
     }
 }