Actual Version, GoVersion, and Build for Go tools

Most of Go tools have the following variables defined:

var (
    Build     string = "2020-04-23" //nolint
    GoVersion string = "1.14.1"     //nolint
    Version   string = "3.5.1"      //nolint
    Commit    string                //nolint
)

While they are hard-coded, thy then later get overridden by the Makefile. Still, numbers here, especially Build and GoVersion, contain or may contain outdated information. We need either keep them empty (like Commit) or update each time we prepare new release.