Rework #13624 using [go1.17 slice-to-array-pointer conversion](https://utcc.utoronto.ca/~cks/space/blog/programming/GoConvertSliceToArray). Think about switching to go-eth-kzg (see PR #15222)
Rework #13624 using go1.17 slice-to-array-pointer conversion. Think about switching to go-eth-kzg (see PR #15222)