fix!: redwood gettext for payment notifications (#235)

eox_nelp/payment_notifications/templates/payment_notifications.html

@@ -2,7 +2,7 @@
 <%!
 from django.conf import settings
 from django.urls import reverse
-from django.utils.translation import ugettext as _
+from django.utils.translation import gettext as _
 from django.contrib.auth import get_user_model
 from lms.djangoapps.grades.api import CourseGradeFactory
 from opaque_keys.edx.keys import CourseKey

eox_nelp/payment_notifications/templates/payment_notifications_with_frame.html

@@ -1,5 +1,5 @@
 <%page expression_filter="h"/>
-<%! from django.utils.translation import ugettext as _ %>
+<%! from django.utils.translation import gettext as _ %>
 <%namespace name='static' file='/static_content.html'/>
 <%inherit file="/main.html" />