GH actions: install wheel, update pytest-docs

Author: tschaume

.github/workflows/pull-request.yml

@@ -25,7 +25,7 @@ jobs:
         run: sudo apt-get update && sudo apt-get install chromium-chromedriver
       - name: Install dependencies
         run: |
-          python${{ matrix.python-version }} -m pip install --upgrade pip packaging
+          python${{ matrix.python-version }} -m pip install --upgrade pip packaging wheel
           python${{ matrix.python-version }} -m pip install `grep numpy== requirements/ubuntu-latest_py${{ matrix.python-version }}_extras.txt`
           python${{ matrix.python-version }} -m pip install -r requirements/ubuntu-latest_py${{ matrix.python-version }}_extras.txt
           python${{ matrix.python-version }} -m pip install --no-deps .

.github/workflows/pytest-docs.yml

@@ -23,9 +23,10 @@ jobs:
         run: sudo apt-get update && sudo apt-get install firefox-geckodriver
       - name: Install dependencies
         run: |
-          python -m pip install --user --upgrade pip pip-tools numpy
-          python -m piptools sync --user requirements/ubuntu-latest_py${{ matrix.python-version }}_extras.txt
-          python -m pip install --user --no-deps .
+          python${{ matrix.python-version }} -m pip install --upgrade pip packaging wheel
+          python${{ matrix.python-version }} -m pip install `grep numpy== requirements/ubuntu-latest_py${{ matrix.python-version }}_extras.txt`
+          python${{ matrix.python-version }} -m pip install -r requirements/ubuntu-latest_py${{ matrix.python-version }}_extras.txt
+          python${{ matrix.python-version }} -m pip install --no-deps .
       - name: Build new docs
         run: |
           cd docs_rst