Hi!
"I can confirm that you must upgrade simplesamlphp/composer-module-installer first before you do any composer updates on simplesamlphp/simplesamlphp"
The solution to upgrade simplesamlphp was using several versions as valid in `composer.json`:
```sh
"simplesamlphp/simplesamlphp": "^1 || ^2",
"symfony/console": "^4 || ^5 || ^6",
"twig/twig": "^2 || ^3",
```