chore: Translate django.po in fr_CA

98% of minimum 50% translated source file: 'django.po'
on 'fr_CA'.

Sync of partially translated files: 
untranslated content is included with an empty translation 
or source language content depending on file format

translations/edx-enterprise/enterprise/conf/locale/fr_CA/LC_MESSAGES/django.po

@@ -890,7 +890,7 @@ msgstr ""
 
 #: enterprise/admin/forms.py:652
 msgid "Enter enterprise channel worker username."
-msgstr ""
+msgstr "Saisissez le nom d’utilisateur de service du canal d’entreprise."
 
 #: enterprise/admin/forms.py:721
 msgid ""