update allocated codegen test from #55223

Author: KristofferC

test/compiler/codegen.jl

@@ -407,7 +407,7 @@ function g_dict_hash_alloc()
 end
 # Warm up
 f_dict_hash_alloc(); g_dict_hash_alloc();
-@test (@allocated f_dict_hash_alloc()) == (@allocated g_dict_hash_alloc())
+@test abs((@allocated f_dict_hash_alloc()) / (@allocated g_dict_hash_alloc()) - 1) < 0.1 # less that 10% difference
 
 # returning an argument shouldn't alloc a new box
 @noinline f33829(x) = (global called33829 = true; x)