update core testing for numpy 2.3

Author: zm711

.github/workflows/core-test.yml

@@ -26,13 +26,17 @@ jobs:
       matrix:
         os: ["ubuntu-latest", "windows-latest", "macos-latest"]
         python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
-        numpy-version: ['1.24.4', '1.25.1', '1.26.4', '2.0.2','2.1.3', '2.2.4']
+        numpy-version: ['1.24.4', '1.25.1', '1.26.4', '2.0.2','2.1.3', '2.2.4', '2.3.1']
         # 1.24: 3.11, 1.25: 3.11, 1.26: 3.12
         exclude:
            - python-version: '3.9'
              numpy-version: '2.1.3'
            - python-version: '3.9'
              numpy-version: '2.2.4'
+           - python-version: '3.9'
+             numpy-version: '2.3.1'
+           - python-version: '3.10'
+             numpy-version: '2.3.1'
            - python-version: '3.12'
              numpy-version: '1.24.4'
            - python-version: '3.12'