update build_pip workflow

Author: vtavana

.github/workflows/build_pip.yaml

@@ -17,8 +17,8 @@ jobs:
 
     strategy:
       matrix:
-        python: ['3.10', '3.11', '3.12']
-        numpy_ver: ['1.26.4', '2.2.5']
+        python: ['3.9', '3.10', '3.11', '3.12']
+        numpy_ver: ["numpy'<2'", "numpy'>=2'"]
 
     steps:
       - name: Install jq
@@ -49,7 +49,7 @@ jobs:
       - name: Build conda package
         run: |
           pip install --no-cache-dir scikit-build cmake ninja cython
-          pip install --no-cache-dir numpy==${{ matrix.numpy_ver }}
+          pip install --no-cache-dir ${{ matrix.numpy_ver }}
           echo "CONDA_PREFFIX is '${CONDA_PREFIX}'"
           export MKLROOT=${CONDA_PREFIX}
           pip install . --no-build-isolation --no-deps --verbose