ci: fix github actions warning

You are using "pypa/gh-action-pypi-publish@master". The "master" branch
of this project has been sunset and will not receive any updates, not
even security bug fixes. Please, make sure to use a supported version.
If you want to pin to v1 major version, use
"pypa/gh-action-pypi-publish@release/v1". If you feel adventurous, you
may opt to use use "pypa/gh-action-pypi-publish@unstable/v1" instead.
A more general recommendation is to pin to exact tags or commit shas.

Signed-off-by: Robin Jarry <robin@jarry.cc>

Author: rjarry

.github/workflows/ci.yml

@@ -87,7 +87,7 @@ jobs:
       - run: python -m pip install --upgrade pip setuptools wheel
       - run: python -m pip install --upgrade pep517 twine
       - run: python -m pep517.build --out-dir dist/ --source .
-      - uses: pypa/gh-action-pypi-publish@master
+      - uses: pypa/gh-action-pypi-publish@release/v1
         with:
           user: ${{ secrets.pypi_user }}
           password: ${{ secrets.pypi_password }}