signet: update genesis hash to use new POW-valid version

bitcoin/chainparams.c

@@ -55,7 +55,7 @@ const struct chainparams networks[] = {
     {.network_name = "signet",
      .bip173_name = "sb",
      .bip70_name = "signet",
-     .genesis_blockhash = {{{.u.u8 = {0x2d, 0x09, 0x8b, 0x08, 0x55, 0x1b, 0xf3, 0xda, 0xb1, 0xa2, 0x72, 0xa8, 0x71, 0x4a, 0x12, 0x9d, 0x06, 0x5c, 0xfb, 0x32, 0xfa, 0x7e, 0x18, 0xdf, 0x00, 0x99, 0x09, 0x5f, 0xbc, 0xd8, 0x53, 0x62}}}},
+     .genesis_blockhash = {{{.u.u8 = {0xce, 0xbd, 0x8f, 0x6e, 0x69, 0x77, 0x30, 0xb7, 0x4c, 0x70, 0x9c, 0xdd, 0x1e, 0x6a, 0xba, 0xaf, 0x2a, 0xfc, 0x98, 0xbf, 0x4c, 0xff, 0xb2, 0x39, 0xf3, 0xdb, 0x44, 0x27, 0x64, 0x29, 0x00, 0x00}}}},
      .rpc_port = 38332,
      .cli = "bitcoin-cli",
      .cli_args = "-signet",