PHP 8.0, 8.1, PHPUnit 9 support + automated check for php compatibility - #2403

PHP 8.0, 8.1, PHPUnit 9 support + automated check for php compatibility#2403

SamRemis merged 34 commits into

aws:masteraws/aws-sdk-php:masterfrom

Zombaya:phpcompatibilityCheckerZombaya/aws-sdk-php:phpcompatibilityCheckerCopy head branch name to clipboard