test: update wycheproof test vectors

Pull in updated test vectors. This update is done as a follow-up to bitcoin-core#1711.

Author: josibake

src/wycheproof/WYCHEPROOF_COPYING

@@ -1,7 +1,7 @@
 * The file `ecdsa_secp256k1_sha256_bitcoin_test.json` in this directory
   comes from project Wycheproof with git commit
-  `1f32ea7bb6cc5bd111cbd5507456b255dc8337c3`, see
-  https://github.com/C2SP/wycheproof/blob/1f32ea7bb6cc5bd111cbd5507456b255dc8337c3/testvectors_v1/ecdsa_secp256k1_sha256_bitcoin_test.json
+  `7ae4532f417575ced2b1cbbabed81a7fecfaef5d`, see
+  https://github.com/C2SP/wycheproof/blob/7ae4532f417575ced2b1cbbabed81a7fecfaef5d/testvectors_v1/ecdsa_secp256k1_sha256_bitcoin_test.json
 
 * The file `ecdh_secp256k1_test.json` in this directory
   comes from project Wycheproof with git commit