fix(precompiles/erc20): update GasTransfer value

[GuillemGarciaDev]

fix(precompiles/erc20): update GasTransfer value

This PR updates the GasTransfer constant value from 3_000_000 to 100_000, which affects the gas cost of Transfer, TransferFrom, Mint, Burn, Burn0 and BurnFrom methods.

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