ml-dsa: migrate to signature 3 (#954)

Author: baloo

Cargo.lock

@@ -36,7 +36,7 @@ hybrid-array = { version = "0.3", features = ["extra-sizes"] }
 num-traits = "0.2.19"
 rand_core = { version = "0.9", optional = true }
 sha3 = "=0.11.0-pre.5"
-signature = "=2.3.0-pre.7"
+signature = "=3.0.0-pre"
 zeroize = { version = "1.8.1", optional = true, default-features = false }
 
 const-oid = { version = "0.10", features = ["db"], optional = true }