pass macosx-version-min for libblst.a

fixes:
ld: warning: object file (third_party/blst/blst/libblst.a[2](assembly.o)) was built for newer 'macOS' version (14.0) than being linked (13.3)

Author: battlmonstr

third_party/blst/CMakeLists.txt

@@ -24,7 +24,11 @@ elseif(MSVC)
   set(BLST_BUILD_SCRIPT build.bat)
   set(BLST_LIB blst.lib)
 else()
-  set(BLST_BUILD_SCRIPT ./build.sh)
+  set(BLST_BUILD_SCRIPT_ARGS "")
+  if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    set(BLST_BUILD_SCRIPT_ARGS "-mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}")
+  endif()
+  set(BLST_BUILD_SCRIPT ./build.sh ${BLST_BUILD_SCRIPT_ARGS})
   set(BLST_LIB libblst.a)
 endif()