Show poetry version in ci job

gitlab-ci/test.yml

@@ -7,6 +7,7 @@ python-tests:
   image: python:3.7
   before_script:
     - pip install poetry --quiet
+    - poetry --version
     - poetry config cache-dir .cache/poetry
     - poetry config virtualenvs.in-project true
     - poetry install --no-interaction --quiet --extras sentry