Missing Typo3 requirement in composer.json

In version 6.0.1 there is no 
`	"require": {
		"typo3/cms-core": "^11"
	}
`
which causes this version to be installed in Typo3 10, when using "fab/media": "^6.0".
This causes errors, as the version contains code that is not present in v10.