Change verify-generated to new setup_env

hack/lib/verify-generated.sh

@@ -35,7 +35,7 @@ kube::verify::generated() {
     kube::util::ensure_clean_working_dir
 
     # This sets up the environment, like GOCACHE, which keeps the worktree cleaner.
-    kube::golang::old::setup_env
+    kube::golang::new::setup_env
 
     _tmpdir="$(kube::realpath "$(mktemp -d -t "verify-generated-$(basename "$1").XXXXXX")")"
     git worktree add -f -q "${_tmpdir}" HEAD