build: upgrade shunit2 lib

oldratlee · oldratlee · commit fa92c9fd2b53 · 2023-08-09T00:11:29.000+08:00
diff --git a/test-cases/shunit2-lib b/test-cases/shunit2-lib
@@ -1 +1 @@
-Subproject commit ebc4baa08f045b7ef0f45c4b7d6f34f08d732f3d
+Subproject commit 47be8b23a46a7897e849f1841f0fb704d34d0f6e
