When the version we want to install is 2 or larger, the module is
namespaced in v2. This change allows us to keep installing v1 from
`github.com/goreleaser/goreleaser`, but for any other version, it will
append `/v$version` to the module path.

This should allow us to update goreleaser to v2 in
https://gitlab.com/gitlab-com/gl-infra/jsonnet-tool/-/merge_requests/152

Currently uses the go version packaged with goreleaser, which can fail
if it's behind the version being used by the project.

This runs the build as part of goreleaser.

Many pipelines are used to perform automated tasks on validation. These
pipelines should not rerun validation on every schedule as this is
resource intensive and does not add value.