Fix Catch2 include: use catch2/catch_test_macros.hpp (v3)

Made-with: Cursor

Author: caugonnet

cudax/test/utility/unstable_unique.cu

@@ -12,7 +12,7 @@
 
 #include <vector>
 
-#include <catch2/catch.hpp>
+#include <catch2/catch_test_macros.hpp>
 
 namespace cudax = cuda::experimental;