remove windows-25 and replace it with macos-15 within project-ci.yaml

Author: harry-swift

.github/workflows/project-ci.yaml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-24.04, windows-2025]
+        os: [ubuntu-24.04, macos-15]
         python-version: ["3.11", "3.12", "3.13"]
     steps:
       - name: Checkout repo