chore: fix a test on macos

lib/tests/run_binary_expansions/expansions.sh

diff --git a/lib/tests/run_binary_expansions/expansions.sh b/lib/tests/run_binary_expansions/expansions.sh
index 683387f..898162a 100755
--- a/lib/tests/run_binary_expansions/expansions.sh
+++ b/lib/tests/run_binary_expansions/expansions.sh
@@ -5,7 +5,7 @@
 outfile=$1
 rm -f $outfile
 for each in $@; do
-  sanitized=${each/darwin/PLATFORM}
+  sanitized=${each/darwin_arm64/PLATFORM}
   sanitized=${sanitized/k8/PLATFORM}
   echo $sanitized >>$outfile
 done