ci: fix goreleaser not being found

[cakemanny]

This fixes goreleaser not being found during the make cross step of the Build and Test workflow, as seen here:

/bin/bash: goreleaser: command not found

https://github.com/iovisor/kubectl-trace/actions/runs/9952012009/job/27492540456#step:10:283

It would have been sufficient to add $GOPATH/bin to the PATH, but instead I use a setup-go step to be consistent with the release workflow, which takes care of this.

Additionally,

• it replaces the deprecated --rm-dist goreleaser flag with --clean which I spotted while testing
• it bumps the go version in the release workflow to at 1.19 or higher in order to follow the go.mod file.

[fntlnz]

Thanks @cakemanny 🎉