Specify Python version

Author: ScrappyCocco

.github/workflows/python-test-dev.yml

@@ -17,6 +17,8 @@ jobs:
         fetch-depth: 0
     - name: Set up Python
       uses: actions/setup-python@v4
+      with:
+        python-version: '3.6'
     - name: Install dependencies
       run: |
         cd howlongtobeatpy

.github/workflows/python-test-release.yml

@@ -25,6 +25,8 @@ jobs:
         fetch-depth: 0
     - name: Set up Python
       uses: actions/setup-python@v4
+      with:
+        python-version: '3.6'
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip