bump macos deployment target

Unfortunately we cannot set lower target versions until we use an
alternative way to install openssl (e.g., build it from source). OpenSSL
Homebrew packages were built with higher target versions.

.github/workflows/release.yml

@@ -56,9 +56,11 @@ jobs:
         - os: macos-13
           arch: x86_64
           cmake_osx_architectures: x86_64
+          macosx_deployment_target: 13.0
         - os: macos-14
           arch: arm64
           cmake_osx_architectures: arm64
+          macosx_deployment_target: 14.0
 
     steps:
       - uses: actions/checkout@v4
@@ -93,7 +95,7 @@ jobs:
             S2GEOMETRY_VERSION=${{ env.S2GEOMETRY_VERSION }}
             S2GEOGRAPHY_VERSION=${{ env.S2GEOGRAPHY_VERSION }}
             CXX_STANDARD=${{ env.CXX_STANDARD }}
-            MACOSX_DEPLOYMENT_TARGET=10.9
+            MACOSX_DEPLOYMENT_TARGET=${{ matrix.macosx_deployment_target }}
             CMAKE_OSX_ARCHITECTURES='${{ matrix.cmake_osx_architectures }}'
           CIBW_ENVIRONMENT_WINDOWS:
             DEPENDENCIES_DIR='${{ runner.temp }}\3rd-party'