Update Xcode CI image (#509)

Author: crazytonyli

.buildkite/shared-pipeline-vars

@@ -3,7 +3,7 @@
 # This file is `source`'d before calling `buildkite-agent pipeline upload`, and can be used
 # to set up some variables that will be interpolated in the `.yml` pipeline before uploading it.
 
-XCODE_VERSION="16.0-v7"
+XCODE_VERSION="16.0-v10"
 CI_TOOLKIT_PLUGIN_VERSION="3.7.1"
 TEST_COLLECTOR_VERSION="v1.10.2"