Update go mods, fix typo, remove runtime import

[tonylambiris]

Updating my Arch Linux AUR packages, this was erroring on build:

❯ make      
Project:    komanda
Go Version: go version go1.18.1 linux/amd64
Go Path:    /home/tlambiris/go

# github.com/mephux/komanda-cli
vet: ./komanda.go:9:2: "runtime" imported but not used
make: *** [Makefile:39: lint] Error 2
zsh: exit 2     make

Updating go mods and removing runtime import fixed it.