Update signature_deduplication_test.py

Signed-off-by: Mohit Yadav <ymohit799057@gmail.com>

Author: mohityadav8

tests/unit/signature_deduplication_test.py

@@ -36,7 +36,7 @@ def test_multiple_keys_still_work():
     assert len(sig_pairs) == 2, "Expected 2 signatures for different keys"
     pubkey_prefixes = {sp.pubKeyPrefix for sp in sig_pairs}
     expected_prefixes = {
-        key1.public_key().to_bytes(),
-        key2.public_key().to_bytes(),
+    key1.public_key().to_bytes_raw(),
+    key2.public_key().to_bytes_raw(),
     }
     assert pubkey_prefixes == expected_prefixes, "Signatures should match key1 and key2 exactly"