Test on numpy 1 and 2

.github/workflows/python-package-tox.yml

@@ -13,19 +13,22 @@ jobs:
     strategy:
       matrix:
         python: ["3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
+        numpyversion: ["1", "2"]
       fail-fast: false
 
     runs-on: ${{ matrix.python <= '3.6' && 'ubuntu-20.04' || 'ubuntu-22.04' }}
 
+    name: Test on python ${{ matrix.python }} and numpy ${{ matrix.numpyversion }}
     steps:
       - uses: actions/checkout@v4
       - name: Setup Python
         uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python }}
-          allow-prereleases: true
-      - name: Install Tox and any other packages
+      - name: Install Tox
         run: pip install tox
+      - name: Install numpy ${{ matrix.numpyversion }}
+        run: pip install numpy==${{ matrix.numpyversion }}.*
       - name: Run Tox
         # Run tox using the version of Python in `PATH`
         run: tox -e py