Require PHPUnit v8.2

Author: lcobucci

composer.json

@@ -24,7 +24,7 @@
         "phpstan/phpstan-deprecation-rules": "^0.11",
         "phpstan/phpstan-phpunit": "^0.11",
         "phpstan/phpstan-strict-rules": "^0.11",
-        "phpunit/phpunit": "^8.0"
+        "phpunit/phpunit": "^8.2"
     },
     "autoload": {
         "psr-4": {