unit_tests:3.12: Display dependencies tree, and allow to fail

allow_failure
https://docs.gitlab.com/ee/ci/yaml/#allow_failure

To understand from which dependency is https://pypi.org/project/rpds-py/
coming from

.gitlab-ci.yml

@@ -131,6 +131,11 @@ unit_tests:3.12:
   extends: .tests
   variables:
     PYTHON_VERSION: "3.12"
+  script:
+    - poetry install
+    - poetry run pytest tests/unit
+    - poetry show --tree
+  allow_failure: true
 
 .image:
   stage: package