CI: tweak CI for the change to meson-python as default build backend

Author: rgommers

.circleci/config.yml

@@ -61,7 +61,6 @@ jobs:
           name: build numpy
           command: |
             . venv/bin/activate
-            pip install --progress-bar=off --upgrade pip 'setuptools<49.2.0'
             pip install --progress-bar=off -r test_requirements.txt
             pip install --progress-bar=off -r doc_requirements.txt
             pip install .

.github/workflows/build_test.yml

@@ -436,7 +436,7 @@ jobs:
       run: |
         export CC=/usr/bin/gcc-12
         export CXX=/usr/bin/g++-12
-        python -m pip install -e .
+        python setup.py develop
     - name: Show config
       run: |
         python -c "import numpy as np; np.show_config()"