For #26603
Issue: when editing DigiCert config, we were making a call to DigiCert
when admin modified CN, UPN, or Seat ID.
Fix: when editing these DigiCert fields, API token is required to be
re-entered (for security):
- Name
- URL
- Profile GUID
# Checklist for submitter
- [x] Added/updated automated tests
- [x] Manual QA for all new/changed functionality