raise dependency on PHP 8.0

raise dependency on PHP 7.4
raise dependency on laminas-eventmanager 3.5
raise dependency on laminas-servicemanager 3.15.1
raise dependency on laminas-stdlib 3.10.1

raise dependency on laminas-eventmanager 3.4
raise dependency on laminas-stdlib 3.6

raise dependency on PHP 7.3
switch to phpunit9