jupyterhub-ldapauthenticator==1.3

[manics]

Closes #1561

Significant changes (taken from https://github.com/jupyterhub/ldapauthenticator/blob/1.3.0/CHANGELOG.md):

• Avoid binding the connection twice
• Gracefully handle username lookups with list return values
• Empty DN templates are now ignored, search_filter and allowed_groups are no longer mutually exclusive*.
• Allow authentication with empty bind_dn_template when using lookup_dn
• Ignore username returned by resolve_username - use_lookup_dn_username configuration option added
• Lookup additional LDAP user info - user_info_attributes is now saved in auth_state for a valid user.

[consideRatio]

Thanks @manics for your work! ❤️