add hardened_malloc-rs feature and global_allocator

Signed-off-by: strawberry <strawberry@pupbrain.dev>

Cargo.lock

@@ -474,6 +474,7 @@ dependencies = [
  "either",
  "figment",
  "futures-util",
+ "hardened_malloc-rs",
  "hickory-resolver",
  "hmac",
  "http 0.2.12",
@@ -966,6 +967,10 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "hardened_malloc-rs"
+version = "0.1.0+12"
+
 [[package]]
 name = "hashbrown"
 version = "0.14.3"