Simplify tests and docs flow

Author: rhpvorderman

.github/workflows/ci.yml

@@ -11,33 +11,25 @@ on:
 jobs:
   lint:
     runs-on: ubuntu-20.04
-    strategy:
-      matrix:
-        python-version:
-          - 3.6
     steps:
       - uses: actions/[email protected]
-      - name: Set up Python ${{ matrix.python-version }}
+      - name: Set up Python 3.6
         uses: actions/[email protected]
         with:
-          python-version: ${{ matrix.python-version }}
+          python-version: 3.6
       - name: Install tox
         run: pip install tox
       - name: Lint
         run: tox -e lint
   docs:
     needs: lint
     runs-on: ubuntu-20.04
-    strategy:
-      matrix:
-        python-version:
-          - 3.6
     steps:
       - uses: actions/[email protected]
-      - name: Set up Python ${{ matrix.python-version }}
+      - name: Set up Python 3.6
         uses: actions/[email protected]
         with:
-          python-version: ${{ matrix.python-version }}
+          python-version: 3.6
       - name: Install isal
         run: sudo apt-get install libisal-dev
       - name: Install tox