Mergeback PR from private to public.

Sustaining security fixes 6

ENT-3523 | Handle Client Error for the API called in refund_order_voucher signal.

* EDUCATOR-5304 - update help text

* EDUCATOR-5304 - update help text - escape underscore

* EDUCATOR-5304 - update help text - escape underscore 2

Check if effective_user is anonymous before trying to get grade

I saw locally that it caused an error if you hit the endpoint directly
so just being defensive.

ENT-3520 | Define enterprise service usernames as a simple list of strings. Upgrade edx-enterprise to 3.8.27

suppressed select field for logistration forms

suppressed email in forgot password banner

VAN-80

Merge pull request #25253 from edx/github-actions-mysqldbdump/5bc6829d

edxapp MySQL database dump

github action to automerge dbdump PRs

* log grade policy changes

* quality

* update docs

* obscure urls

Don't use "/logout" as the next-url for login

* add json validation step to save

* fixup! add json validation step to save

* fixup! fixup! add json validation step to save

* EDUCATOR-5300 - advanced team settings validation

* EDUCATOR-5300 - handle missing team config

* EDUCATOR-5300 - CR comments

* EDUCATOR-5300 - CR comments 2

* EDUCATOR-5300 - CR max team size

* EDUCATOR-5300 - CR max team size fix up

bumping enterprise version to 3.6.26

Sends Post-password-change acknowledgment email

* Commits:
  Allow anonymous access for course blocks API

add missing app blackboard

drop video pipeline integration model with migration

Co-authored-by: GitHub Actions MySQLdbdump automation <admin@edx.org>

* Fix ref on multiselect button to prevent if from staying open

VAN-81

PROD-421

Python Requirements Update