Merge pull request #15873 from edx/saleem-latif/ENT-612

ENT-612: Version upgrade for edx-enterprise that contains fix for 500 error on enterprise landing page.

requirements/edx/base.txt

@@ -48,7 +48,7 @@ edx-lint==0.4.3
 astroid==1.3.8
 edx-django-oauth2-provider==1.1.4
 edx-django-sites-extensions==2.3.0
-edx-enterprise==0.40.3
+edx-enterprise==0.40.4
 edx-oauth2-provider==1.2.0
 edx-opaque-keys==0.4.0
 edx-organizations==0.4.6