Fix CI: drop retired macos-13 runner, fix CMake policy compatibility

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: SarahWeiii

.github/workflows/wheel.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-latest, ubuntu-22.04, macos-13 ]
+        os: [ ubuntu-latest, ubuntu-22.04 ]
         arch: [ x86_64 ]
         include:
           - os: ubuntu-24.04-arm
@@ -68,7 +68,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ ubuntu-latest, ubuntu-22.04, macos-13 ]
+        os: [ ubuntu-latest, ubuntu-22.04 ]
         arch: [ x86_64 ]
         include:
           - os: ubuntu-24.04-arm

setup.py

@@ -45,7 +45,8 @@ def build_extension(self, ext):
             "-DCMAKE_MSVC_RUNTIME_LIBRARY=MultiThreaded",
             "-DOPENVDB_CORE_SHARED=OFF",
             "-DTBB_TEST=OFF",
-            f"-DCMAKE_CXX_FLAGS=-fPIC {'-static-libgcc -static-libstdc++' if system == 'linux' else '/MT /EHsc' if system == 'windows' else ''}"
+            f"-DCMAKE_CXX_FLAGS=-fPIC {'-static-libgcc -static-libstdc++' if system == 'linux' else '/MT /EHsc' if system == 'windows' else ''}",
+            "-DCMAKE_POLICY_VERSION_MINIMUM=3.5"
         ]
 
         build_args = []