check mime types

composer.json

@@ -43,12 +43,13 @@
 		"ext-curl": "*",
 		"ext-json": "*",
 		"ext-openssl": "*",
+		"ext-fileinfo": "*",
 		"phpmailer/phpmailer": "~6.0",
 		"monolog/monolog": "^1.24",
 		"robthree/twofactorauth": "^1.6",
 		"froxlor/idna-convert-legacy": "^2.1",
 		"voku/anti-xss": "^4.1"
-	},
+    },
 	"require-dev": {
 		"phpunit/phpunit": "^9",
 		"php": ">=7.3",