* Update: PLUGINS-2679 – Evaluate and implement secure file writing solution for Plugin.

* Fix – Sometimes printing multiple invoices would only render one page
* Fix – Prevent duplicate order ID titles from appearing when printing multiple invoices

* Dev – Bump WordPress “tested up to” version 6.7.

* Sensei LMS: Version bump to 4.24.4 https://raw.githubusercontent.com/Automattic/sensei/version/4.24.4/changelog.txt
* Sensei Pro: Version bump to 1.24.2
* Allow co-teachers to manage students
* Empty student list for co-teachers on Students page
* Hide lesson actions if lesson is not yet available because of content drip
* Send welcome email only on the day a student gets access to a course and not before
* Send welcome email to student when their access begins to that course, not when they are added to the group

* Check payment_complete for creating invoice details
* Fix missing Invoice number and date in some circumstances