PHP 5.6 not supported as docs indicate

[fmp777]

Due to beberlei/assert
Your requirements could not be resolved to an installable set of packages.

Problem 1
- beberlei/assert[v3.3.0, ..., v3.3.2] require php ^7.0 || ^8.0 -> your php version (5.6.40) does not satisfy that requirement.
- imagekit/imagekit[3.0.0, ..., 3.0.3] require beberlei/assert ^3.3 -> satisfiable by beberlei/assert[v3.3.0, v3.3.1, v3.3.2].
- Root composer.json requires imagekit/imagekit ^3.0 -> satisfiable by imagekit/imagekit[3.0.0, 3.0.2, 3.0.3].

[imagekitio]

@fmp777 This is fixed in version 4.0.1