chore: change publish pypi action to python 3.7

Author: Panaetius

.github/workflows/test_deploy.yml

@@ -521,7 +521,7 @@ jobs:
     - name: Set up Python ${{ matrix.python-version }}
       uses: actions/setup-python@v1
       with:
-        python-version: "3.6"
+        python-version: "3.7"
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip