updates

Imports

• go.uber.org/atomic
• go.uber.org/zap
• go.uber.org/zap/zapcore
• golang.org/x/sync/errgroup
• golang.org/x/xerrors

Imports in module “github.com/gotd/td”

• github.com/gotd/td/tg

Standard library imports

• context
• errors
• sort
• sync
• time