refactor: move away from ioutil (deprecated)
Move away from io/ioutil.
io/ioutil
was deprecated in go 1.16, see https://golang.org/doc/go1.16
Since gitlab-shell dropped support for go 1.15, we can safely remove ioutil
Move away from io/ioutil.
io/ioutil
was deprecated in go 1.16, see https://golang.org/doc/go1.16
Since gitlab-shell dropped support for go 1.15, we can safely remove ioutil