Ubuntu 20.04 LTS not supported

[giveen]

@mtesauro

Looks like you missed type here...supposed to be Ubuntu20.04 not 21.04 https://github.com/DefectDojo/godojo/blob/master/distros/ubuntu.go

var ubuntuReleases = []c.Target{
	{
		ID:      "Ubuntu:22.04",
		Distro:  "Ubuntu",
		Release: "22.04",
		OS:      "Linux",
		Shell:   "bash",
	},
	{
		ID:      "Ubuntu:21.04",
		Distro:  "Ubuntu",
		Release: "21.04",
		OS:      "Linux",
		Shell:   "bash",
	},
}