docs: readme suggests invalid go version

[bketelsen]

readme suggests installing golang-go for debian-based distros, but source requires go 1.20 which isn't available yet.

[simondeziel]

Looks like this is available in stable-backports and later:

$ rmadison -u debian golang-go 
golang-go  | 2:1.11~1         | oldoldstable       | amd64, arm64, armel, armhf, i386, mips, mips64el, mipsel, ppc64el, s390x
golang-go  | 2:1.15~1~bpo10+1 | buster-backports   | amd64, arm64, armel, armhf, i386, mips, mips64el, mipsel, ppc64el, s390x
golang-go  | 2:1.15~1         | oldstable          | amd64, arm64, armel, armhf, i386, mips64el, mipsel, ppc64el, s390x
golang-go  | 2:1.19~1~bpo11+1 | bullseye-backports | amd64, arm64, armel, armhf, i386, mips64el, mipsel, ppc64el, s390x
golang-go  | 2:1.19~1         | stable             | amd64, arm64, armel, armhf, i386, mips64el, mipsel, ppc64el, s390x
golang-go  | 2:1.21~2~bpo12+1 | stable-backports   | amd64, arm64, armel, armhf, i386, ppc64el, s390x
golang-go  | 2:1.21~2         | testing            | amd64, arm64, armel, armhf, i386, mips64el, ppc64el, s390x
golang-go  | 2:1.21~2         | unstable           | amd64, arm64, armel, armhf, i386, mips64el, ppc64el, riscv64, s390x

[stgraber]

Yeah, the correct Go version can reasonably easily be installed on most distros, Ubuntu has suitable versions in lunar, mantic and noble, Debian has a suitable version through backports.

[bketelsen]

There is no mention of the required Go version in the README, nor instructions on how to install it from backports if necessary. This leads to frustration for a first time user. Please consider adding a note about required Go version, and at least a link to how to add backports if needed.