Update to 4.0.0.dev15

pyproject.toml

 [tool.poetry]
 name = "AlekSIS-Core"
-version = "4.0.0.dev14"
+version = "4.0.0.dev15"
 packages = [
     { include = "aleksis" }
 ]
@@ -132,7 +132,7 @@ uwsgi = "^2.0.21"
 tqdm = "^4.66.1"
 django-pg-rrule = "^0.3.1"
 libsass = "^0.23.0"
-graphene-django-optimizer = { git = "https://github.com/bellini666/graphene-django-optimizer", rev = "3648b66" }
+graphene-django-optimizer-reloaded = "^0.9.2"
 
 [tool.poetry.extras]
 ldap = ["django-auth-ldap"]