raise dependency on PHP 8.0

raise dependency on PHP 7.4
raise dependency on laminas-servicemanager 3.10.0
raise dependency on laminas-stdlib 3.6.0
raise dependency on laminas-validator 2.15.1

keep compatibility using laminas-zendframework-bridge
  as this is only used using compat autolader

raise dependency on PHP 7.3
raise dependency on laminas-servicemanager 3.6
switch to phpunit9

switch to phpunit7
drop patch merged upstream