- change key type from service to configuration [SME: 11367]
cleanup older php and php-fpm keys
- set base php to php84 [SME: 12952]
fix missing bits for php74 support
- add php84 support [SME: 12805]
- set php84 as default and php83 as base php as defined by module
- set new value for serialize_precision [SME: 12430]
