Merge #12455: Fix bip68 sequence test to reflect updated rpc error message

e710387 test: Fix bip68 sequence test to reflect updated rpc error message (Ben Woosley)

Pull request description:

  The message changed in #12356, but this test is in the extended test suite, so it didn't fail on CI.

Tree-SHA512: ce800e2636ab7bbba7876aa533e1684e75c37a7d2a119f9c4602fd89ac9215e2e28710a1f27feb642b6737ed858da049ebc52fdd476ff4637e3ac3bb1d8399ce

Author: MarcoFalke

test/functional/feature_bip68_sequence.py

@@ -14,7 +14,7 @@
 SEQUENCE_LOCKTIME_MASK = 0x0000ffff
 
 # RPC error for non-BIP68 final transactions
-NOT_FINAL_ERROR = "64: non-BIP68-final"
+NOT_FINAL_ERROR = "non-BIP68-final (code 64)"
 
 class BIP68Test(BitcoinTestFramework):
     def set_test_params(self):