golang-github-maxmind-geoipupdate release 6.1.0-3 for unstable

[dgit distro=debian split --quilt=gbp]
[dgit please-upload source=golang-github-maxmind-geoipupdate version=6.1.0-3 upstream-tag=upstream/6.1.0 upstream=84b85cbb77b82cae8a99704e9e4838766f0167ef]