Update league dependencies to PHP 8 compatible versions

[sivaschenko]

In scope of the user story MC-41382 we need to the update league/flysystem, league/flysystem-aws-s3-v3 and league/flysystem-cached-adapter dependency versions from "^{1.0" to "}2.0"

 

In scope of this spice we need to estimate the effort required to provide that upgrade.

 

[m2-assistant]

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