Constrain PHP version

[simPod]

Hi, having >= 7.3 will allow PHP 10 and most likely it will crash there because of many BCs that will happen in the language.

We should constrain it e.g. to ^7.3 || ^8.0 || ^8.1

php-interval-tree/composer.json

Line 19 in 3fcfa36

"php": ">=7.3"

[dan-on]

Hi, thank you! I'll fix this

[simPod]

Cool. It's not fixable for old releases unfortunately but still... ;)