ci: don’t pin Poetry version

.gitlab-ci.yml

@@ -22,7 +22,7 @@ build-openapi-scheme:
     - apt-get update
     - apt-get install -y gcc libldap2-dev libsasl2-dev libmagic-dev
     - python3 -m pip install --upgrade pip
-    - python3 -m pip install poetry==1.8.1
+    - python3 -m pip install poetry
     - poetry install --without dev,test --no-root
   script:
     - mkdir public