[#11878] Add CAPTCHA to ARF (#13081)

* Add captcha to ARF

* Update front-end tests

* Fix lint errors

* Change captcha to uppercase in error text

* Return captcha response when the getter is called

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Co-authored-by: Jay Aljelo Ting <65202977+jayasting98@users.noreply.github.com>

[#12048] Update changelog docs and changelog name (#13062)

* Update docs

* Rename changelog file

* Amend changelog naming

[#12048] Configure connection pool using hikari (#12978)

* Configure hikari

* Remove spacing

* Lint

configure agroal connection pool (#12971)

[#12048] Fix account request indexing (#12967)

* Add isTransactionNeeded method to Action

* Remove delay from taskqueuer

* Change CreateAccountRequest to handle own transactions

Update developers.json (#12958)

[#12704] Release V8.30.0 (#12705)

* Update some outdated docs

* Add new contributors + update old usernames

* Update committers and team members list

[#12565] Release V8.29.0 (#12566)

[#12517] Instructors creating sessions: response visible time should …

…be 'not now' by default (#12518)