chore: Improve gas price for cancelled transactions in driver

[sunce86]

Background

If transaction is submitted at block X, and cancelling transaction is sent at X+5 block, for example, then cancelling transaction needs to be sent with bumped gas price.

Currently, we bump the gas price with 1.125 factor. Instead, we need to bump it 5 times with 1.125 to assume the worst case scenario where all 5 blocks were full and base fee increased with max capacity.

I am not sure this is also valid for BASE, so the issue needs double checking though.