Fix drone validate build

[moio]

go1.19 provides go=1.19.9, the right symbol for the major version is golang(API)

See https://build.opensuse.org/package/view_file/openSUSE:Factory/go1.19/go1.19.spec?expand=1

[MbolotSuse]

Thanks for submitting this fix. I think this works, although go1.19 also seems to work, but I'll default to you on the best way to get the matching version of go that we want.

[moio]

go1.19 also seems to work, but I'll default to you on the best way to get the matching version of go that we want.

Indeed the difference is tiny - the only advantage in relying on the symbol instead of the package name means that the package name could be renamed without us being affected.

I will not be against just using go1.19 if that's easier to understand for non-SLE-centric developers. ☮️