Fix release pipeline (#32)

Author: ssbarnea

.github/workflows/release.yml

@@ -8,41 +8,37 @@ jobs:
   pypi:
     name: Publish to PyPI registry
     environment: release
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
 
     env:
       FORCE_COLOR: 1
       PY_COLORS: 1
-      TOXENV: packaging
       TOX_PARALLEL_NO_SPINNER: 1
 
     steps:
-    - name: Switch to using Python 3.8 by default
+    - name: Switch to using Python 3.9 by default
       uses: actions/setup-python@v4
       with:
-        python-version: 3.8
+        python-version: 3.9
+
     - name: Install tox
       run: >-
         python3 -m
         pip install
         --user
         tox
+
     - name: Check out src from Git
       uses: actions/checkout@v3
       with:
         fetch-depth: 0  # needed by setuptools-scm
+
     - name: Build dists
-      run: python -m tox
-    - name: Publish to test.pypi.org
-      if: >-  # "create" workflows run separately from "push" & "pull_request"
-        github.event_name == 'release'
-      uses: pypa/gh-action-pypi-publish@master
-      with:
-        password: ${{ secrets.testpypi_password }}
-        repository_url: https://test.pypi.org/legacy/
+      run: python -m tox -e pkg
+
     - name: Publish to pypi.org
       if: >-  # "create" workflows run separately from "push" & "pull_request"
         github.event_name == 'release'
-      uses: pypa/gh-action-pypi-publish@master
+      uses: pypa/gh-action-pypi-publish@release/v1
       with:
         password: ${{ secrets.pypi_password }}