[BUGFIX] Use the Composer-installed PHPStan for creating the baseline

Followup to #438

Author: oliverklee

composer.json

@@ -76,7 +76,7 @@
         ],
         "fix:php:fixer": "@php ./.phive/php-cs-fixer.phar --config=config/php-cs-fixer.php fix bin src tests",
         "fix:php:sniffer": "@php ./.phive/phpcbf.phar --standard=config/phpcs.xml bin src tests",
-        "phpstan:baseline": "@php ./.phive/phpstan.phar --configuration=config/phpstan.neon --generate-baseline=config/phpstan-baseline.neon"
+        "phpstan:baseline": "phpstan --configuration=config/phpstan.neon --generate-baseline=config/phpstan-baseline.neon"
     },
     "scripts-descriptions": {
         "ci": "Runs all dynamic and static code checks (i.e. currently, only the static checks).",