improve: increase SystemTxsGas from 1,500,000 to 5,000,000 (#2167)

params/protocol_params.go

@@ -31,7 +31,7 @@ const (
 	CallValueTransferGas  uint64 = 9000    // Paid for CALL when the value transfer is non-zero.
 	CallNewAccountGas     uint64 = 25000   // Paid for CALL when the destination address didn't exist prior.
 	TxGas                 uint64 = 21000   // Per transaction not creating a contract. NOTE: Not payable on data of calls between transactions.
-	SystemTxsGas          uint64 = 1500000 // The gas reserved for system txs; only for parlia consensus
+	SystemTxsGas          uint64 = 5000000 // The gas reserved for system txs; only for parlia consensus
 	TxGasContractCreation uint64 = 53000   // Per transaction that creates a contract. NOTE: Not payable on data of calls between transactions.
 	TxDataZeroGas         uint64 = 4       // Per byte of data attached to a transaction that equals zero. NOTE: Not payable on data of calls between transactions.
 	QuadCoeffDiv          uint64 = 512     // Divisor for the quadratic particle of the memory cost equation.