corrected digest oid for ML-DSA-44

Author: dghgit

pkix/src/main/java/org/bouncycastle/operator/DefaultDigestAlgorithmIdentifierFinder.java

@@ -161,7 +161,7 @@ public class DefaultDigestAlgorithmIdentifierFinder
         digestOids.put(NISTObjectIdentifiers.id_hash_slh_dsa_shake_256s_with_shake256, NISTObjectIdentifiers.id_shake256);
         digestOids.put(NISTObjectIdentifiers.id_hash_slh_dsa_shake_256f_with_shake256, NISTObjectIdentifiers.id_shake256);
 
-        digestOids.put(NISTObjectIdentifiers.id_ml_dsa_44, NISTObjectIdentifiers.id_shake128);
+        digestOids.put(NISTObjectIdentifiers.id_ml_dsa_44, NISTObjectIdentifiers.id_shake256);
         digestOids.put(NISTObjectIdentifiers.id_ml_dsa_65, NISTObjectIdentifiers.id_shake256);
         digestOids.put(NISTObjectIdentifiers.id_ml_dsa_87, NISTObjectIdentifiers.id_shake256);
         digestOids.put(NISTObjectIdentifiers.id_hash_ml_dsa_44_with_sha512, NISTObjectIdentifiers.id_sha512);