Update dependency pytype to v2021.5.19
Update dependency pytype to v2021.5.19

anarkiwi/faucet,mwutzke/faucet,anarkiwi/faucet,REANNZ/faucet,REANNZ/faucet,faucetsdn/faucet,mwutzke/faucet,faucetsdn/faucet