Install setuptools in CI

Author: t-sommer

.github/workflows/build.yml

@@ -36,7 +36,7 @@ jobs:
     - name: Query Python executable
       run: which python
     - name: Install dependencies
-      run: python -m pip install h5py matplotlib numpy pytest scipy wheel
+      run: python -m pip install h5py matplotlib numpy pytest scipy setuptools wheel
     - name: Build Python Wheel
       run: python setup.py bdist_wheel
     - name: Install Python Wheel