Merge pull request 99designs#780 from 99designs/ci-go16

Use Go 1.16 in CI

Merge pull request 99designs#760 from bazbremner/fix-macos-cross-compile

Set flags to cross-compile darwin/arm64 on darwin/amd64 and vice versa

Update dmg script to report errors when encountered

Update keyring dep

Fix target

Use iso8601 helper

Report number of cleared sessions more accurately

Report number of cleared sessions more accurately

Merge pull request 99designs#646 from 99designs/configurable-expiry-w…

…indow

Add AWS_MIN_TTL to set expiry window

Fix error returned by OIDCTokenKeyring