Merge in 5.40

CRM/Admin/Form/ScheduleReminders.php

CRM/Contact/BAO/GroupContactCache.php

CRM/Contact/BAO/Query.php

CRM/Contribute/Form/Task/TaskTrait.php

CRM/Event/Form/Participant.php

CRM/Price/BAO/PriceSet.php

ext/recaptcha/recaptcha.php

ext/recaptcha/xml/Menu/recaptcha.xml

js/crm.ajax.js

release-notes.md

release-notes/5.39.1.md

release-notes/5.40.0.md

tests/phpunit/CRM/Case/BAO/QueryTest.php

tests/phpunit/CRM/Contact/BAO/GroupTest.php

tests/phpunit/CRM/Contact/BAO/QueryTest.php

tests/phpunit/CRM/Contact/SelectorTest.php