Uses 3.9 for publishing

Author: JonathanHuot

.github/workflows/publish-release.yml

@@ -6,14 +6,12 @@ on:
 jobs:
   publish:
     runs-on: ubuntu-latest
-      fail-fast: false
-      python-version: 3.9
     steps:
     - uses: actions/checkout@v2
-    - name: Set up Python ${{ matrix.python-version }}
+    - name: Set up Python 3.9
       uses: actions/setup-python@v2
       with:
-        python-version: ${{ matrix.python-version }}
+        python-version: 3.9
     - name: Install upload dependencies
       run: |
         python -m pip install --upgrade pip setuptools wheel twine