docs: add v7 upgrade #2417
Description
add v7 Hibiscus upgrade: https://cips.celestia.org/cip-047.html
activates on arabica: https://arabica.celenium.io/block/10133989?tab=transactions
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add v7 Hibiscus upgrade: https://cips.celestia.org/cip-047.html
activates on arabica: https://arabica.celenium.io/block/10133989?tab=transactions