Progress Page update

Update edx-platform dependencies.

Reverting because workers are not functioning because they do not source the application environment. Will fix this separately and then try again.

This reverts commit b0b8a76d.

Extra constraints needed to be added for pytest-randomly and tornado,
both of which have dropped Python 2 support.

Add list endpoint to course certificate API.

Modifying entitlement unenrollment survey, see REVEM-151

Use single yaml config instead of two json configs

REVEM-198 Add waffle flag around get programs call. Also get real program info from the cache instead of returning mock data.

Change git checkout on xdist workers

Updated progress page certificate view for
unverified users.

Merge pull request #19903 from edx/revert-19635-giovanni/bb-728-add-problem-response-report-api-upstream

Revert "[BB-728] Add problem response report API"

Set the default language of the courses through config files

Move jenkins context to env var in pipelines

Added log for credit providers fetched from cache.

LEARNER-6643

OSPR-2818 - Add Contact Us form customization options (BB-548)

SE-800 Wraps the email header in a block so it can be themed

Handle out-of-memory exception on Sysadmin Courses

We've been running into OoM issues with this functionality while
executing on one of our smaller application servers.
- Sometimes this manifests by preventing the entire page from loading
  (exception during the GET).
- At others, it occurs using the `Delete course from site` functionality
  by breaking during the POST handler. This case is particularly
  frustrating because the course actually is deleted, but looks like it
  may not have been. Internally, this is because the 500 error occurs
  _after_ the course has been successfully deleted, though this is
  opaque to the end-user.

While this doesn't address the underlying memory issue,
it does at least allow the app to recover gracefully.

Revert PR 19881 - "Improve 403 error handling"

Convert (Email Change Confirmation) message to edx-ACE

fix course program cache

Added logs

Basically, this was done by:
1. Adding new class type in [common/djangoapps/student/message_types.py]
2. Adding new files for the ace template in a new directory named
    [common/templates/student/edx_ace/emailchangeconfirmation]
3. Removing old template files
    [confirm_email_change.txt] and [email_change_subject.txt]
    from the directories:
    [lms/templates/emails] and
    [common/test/test_sites/test_site/templates/emails]
4. Converting the [confirm_email_change] code to use [ace.send()]

Improve 403 error handling

adding logs to investigate cache.

learner-6943