Update dependency django-auth-ldap to v4

Author: renovate-bot

requirements-container.txt

@@ -1,5 +1,5 @@
 napalm==3.3.1
 ruamel.yaml==0.17.20
-django-auth-ldap==3.0.0
+django-auth-ldap==4.0.0
 google-crc32c==1.3.0
 django-storages[azure,boto3,dropbox,google,libcloud,sftp]==1.12.3