fix: use CI_COMMIT_TAG from gitlab to detect version

.gitlab-ci.yml

@@ -4,10 +4,8 @@ stages:
 publish-pypi:
   stage: package
   image: python:3.10
-  environment:
-    PRIVATE_PYPY_VERSION=1.120.1
   script:
-    - sed -i -e 's/1.12.1/${PRIVATE_PYPY_VERSION}/g' aiohttp_pydantic/__init__.py
+    - sed -i -e 's/1.12.1/${CI_COMMIT_TAG}/g' aiohttp_pydantic/__init__.py
     - pip install -U setuptools wheel pip; pip install invoke
     - invoke upload --pypi-user ${PYPI_REPO_USER} --pypi-password ${PYPI_REPO_PASSWORD} --pypi-url ${PYPI_REPO_URL}
   only: