Added pending_rewards API call to Mainnet 8.X branch (#782)#800

Marcin-Radecki merged 1 commit intorelease-8-mainnetCardinal-Cryptography/aleph-node:release-8-mainnetfrom

update-to-8.3-mainnetCardinal-Cryptography/aleph-node:update-to-8.3-mainnetCopy head branch name to clipboard