Fix macos

Author: FabioZumbi12

cmake/common/buildspec_common.cmake

@@ -67,7 +67,7 @@ function(_setup_obs_studio)
   elseif(OS_MACOS)
     set(_cmake_generator "Xcode")
     set(_cmake_arch "-DCMAKE_OSX_ARCHITECTURES:STRING=arm64\\;x86_64")
-    set(_cmake_env_args CI=)
+    set(_cmake_env_args --unset=CI)
     set(
       _cmake_extra
       -DCMAKE_OSX_DEPLOYMENT_TARGET=${CMAKE_OSX_DEPLOYMENT_TARGET}