vt721 - master pull: Couple more method signature warnings:

I just installed a fresh vtiger from master this morning on Ubuntu 18.04 (php7.2) and there were a couple of method-signature warnings logged:

[09-Jun-2020 10:13:31 Europe/London] PHP Warning:  Declaration of VTSendNotificationTask::getContents($entity) should be compatible with VTEmailTask::getContents($entity, $entityCache = false) in /var/www/html/demo/modules/com_vtiger_workflow/tasks/VTSendNotificationTask.inc on line 0

[09-Jun-2020 10:14:17 Europe/London] PHP Warning:  Declaration of Settings_Workflows_Record_Model::getInstance($workflowId) should be compatible with Settings_Vtiger_Record_Model::getInstance($name = 'Settings:V...') in /var/www/html/demo/modules/Settings/Workflows/models/Record.php on line 17

[09-Jun-2020 10:16:39 Europe/London] PHP Warning:  Declaration of Settings_Vtiger_ConfigModule_Model::getInstance() should be compatible with Settings_Vtiger_Module_Model::getInstance($name = 'Settings:V...') in /var/www/html/demo/modules/Settings/Vtiger/models/ConfigModule.php on line 0