Update edx-enterprise to 3.17.4 | Include a docstring indicating a preference that we don't delete EnterpriseCourseEnrollments.

2.0.0 introduces a backward-compatible WaffleFlag/Switch API. Existing toggles
that use the LegacyWaffle* classes should migrate to the new Waffle* classes.

Upgrade enterprise to 3.17.2 | stop listening for unenroll signal and deleting EnterpriseCourseEnrollments there-from.

bump edx-enterprise to 3.17.0 Listen for student.CourseEnrollment unenrollment signal and delete associated EnterpriseCourseEnrollment record if one exists (we will have a historical record of the deletion).

Upgrade the django-rest framework.

Add an `--inactive` option to the
`bulk_add_orgs_and_org_courses` management
command, which causes the backfill to set
`active=False` on all rows created in the
Organization and OrganizationCourse tables.

This will lower the potential data
integrity risk to production systems
such as courses.edx.org.

Upgrade edx-organizations to 6.6.0

TNL-7774

Bump edx-enterprise to 3.16.7. Modifies the learner portal enterprise_course_enrollments endpoint to include an is_enrollment_active key that indicates the status of the enterprise enrollment's related student.CourseEnrollment. Allow the endpoint to optionally accept an ?is_active query param, so that clients may request only active enrollments from it.

* Updating Python Requirements

* Fixing test failure.

* Update timezone count for new pytz version

Co-authored-by: Awais Qureshi <awais.qureshi@arbisoft.com>
Co-authored-by: usamasadiq <usama.sadiq@arbisoft.com>

* ENT-3548 Multiple IDPS linking to Enterprise Feature