Fix django-oauth-toolkit version

requirements.txt

@@ -7,7 +7,7 @@ django-extensions~=2.1.4
 django-filter~=2.1.0
 django-htcpcp-tea~=0.3.1
 django-mailer~=2.0.1
-django-oauth-toolkit~=0.11.0
+django-oauth-toolkit~=1.1.2
 django-phonenumber-field~=5.0.0
 django-polymorphic~=2.0.3
 djangorestframework~=3.9.0