PHP 8 compatibility

Author: dereuromark

composer.json

@@ -17,7 +17,7 @@
         "ext-json": "*"
     },
     "require-dev": {
-        "phauthentic/file-storage": "dev-master",
+        "phauthentic/file-storage": "^1.0",
         "instituteweb/composer-scripts": "^1.1"
     },
     "minimum-stability": "dev",