Role environment - debops v3.0.5 - type error bool instead of str

[JeGoi]

ansible version

$ ansible --version
ansible [core 2.15.4]
  config file = None
  configured module search path = ['./.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']
  ansible python module location = /usr/local/lib/python3.10/dist-packages/ansible
  ansible collection location = ./.ansible/collections:/usr/share/ansible/collections
  executable location = /usr/local/bin/ansible
  python version = 3.10.12 (main, Jun 11 2023, 05:26:28) [GCC 11.4.0] (/usr/bin/python3)
  jinja version = 3.0.3
  libyaml = True

debops version

Installing 'debops.debops:3.0.5' to './ansible_collections/debops/debops'
debops.debops:3.0.5 was installed successfully 

vars

$ cat ./inventory/group_vars/all/environment.yml 
---
inventory__group_environment:
  CI: "{{ True if lookup('env', 'CI') else False }}"

I also tried with ' and " and | lower

issue

An unhandled exception occurred while running the lookup plugin 'template'. Error was a <class 'ansible.errors.AnsibleError'>, original message: Unexpected templating type error occurred on (
[ template content from https://github.com/debops/debops/blob/master/ansible/roles/environment/templates/lookup/environment__variables.j2 ]
): sequence item 2: expected str instance, bool found. sequence item 2: expected str instance, bool found