Fix PHPStan version for PHP 7.1

Signed-off-by: Maurício Meneghini Fauth <mauricio@fauth.dev>

Author: MauricioFauth

composer.json

@@ -37,8 +37,8 @@
     },
     "require-dev": {
         "phpmyadmin/coding-standard": "^3.0.0",
-        "phpstan/phpstan": "^1.10",
-        "phpstan/phpstan-phpunit": "^1.3",
+        "phpstan/phpstan": "^1.4.10",
+        "phpstan/phpstan-phpunit": "^1.0",
         "phpunit/phpunit": "^7.5 || ^8.5 || ^9.6 || ^10.3"
     },
     "autoload": {