ci: unittest with various numpy version

.github/workflows/unittest.yml

@@ -7,12 +7,13 @@ on:
 
 jobs:
   test:
-    name: Test on ${{ matrix.os }}, ${{ matrix.install_from }}
+    name: Test on ${{ matrix.os }}, ${{ matrix.install_from }}, ${{ matrix.numpy }}
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        install_from: [source, source_with_pre, sdist]
+        install_from: [source, sdist]
+        numpy: [oldest-supported-numpy, numpy<2, numpy>=2.0.0rc1]
 
     steps:
       - uses: actions/checkout@v4
@@ -29,17 +30,17 @@ jobs:
         if: matrix.install_from == 'source'
         run: pip install ./PythonAPI
 
-      - name: Install from source with prerelease.
-        if: matrix.install_from == 'source_with_pre'
-        # This tests compatibility with pre-release dependencies
-        run: pip install --pre ./PythonAPI
-
       - name: Install from sdist
         if: matrix.install_from == 'sdist'
         shell: bash
         run: |
           pipx run build --sdist ./PythonAPI
           pip install ./PythonAPI/dist/*.tar.gz
 
+      - name: Install numpy
+        run: |
+          pip install ${{ matrix.numpy }}
+          python -c "import numpy as np; print(np.__version__)"
+
       - name: Run test cases
         run: python tests/test_cases.py