Test: bump max stacksize once again to match current expectation.

[ROCm/rccl commit: c07445d5b4]

projects/rccl/test/common/StandaloneUtils.hpp

@@ -25,7 +25,7 @@
     }                                                           \
 } while(0)
 
-#define MAX_STACK_SIZE 520
+#define MAX_STACK_SIZE 570
 
 #ifdef ENABLE_LL128
 #define MAX_STACK_SIZE_gfx90a 360