make sure pip is upgraded

Author: tschaume

.github/workflows/release.yml

@@ -49,9 +49,11 @@ jobs:
 
       - name: Install dependencies
         run: |
-          python -m pip install --user `grep numpy== requirements/ubuntu-latest_py${{ matrix.python-version }}_extras.txt`
-          python -m pip install --user -r requirements/ubuntu-latest_py${{ matrix.python-version }}_extras.txt
-          python -m pip install --user --no-deps .[server]
+          python -m pip install --upgrade pip
+          python -m pip install `grep numpy== requirements/ubuntu-latest_py${{ matrix.python-version }}_extras.txt`
+          python -m pip install -r requirements/ubuntu-latest_py${{ matrix.python-version }}_extras.txt
+          python -m pip install --upgrade pip
+          python -m pip install --no-deps .[server]
 
       - name: Build package
         run: SETUPTOOLS_SCM_PRETEND_VERSION=${{env.NEXT_RELEASE}} python -m build