ci: set MACOSX_DEPLOYMENT_TARGET to version 14.0 as required by liblzma.

Author: plusvic

.github/workflows/release.yaml

@@ -187,7 +187,7 @@ jobs:
         CIBW_TEST_SKIP: '*-macosx_arm64 *-macosx_universal2:arm64'
         CIBW_BUILD_VERBOSITY: 1
 
-        MACOSX_DEPLOYMENT_TARGET: '10.12'
+        MACOSX_DEPLOYMENT_TARGET: '14.0'
 
     - name: Upload artifacts
       uses: actions/upload-artifact@4cec3d8aa04e39d1a68397de0c4cd6fb9dce8ec1  # v4.6.1