Update or remove vendor folder

[breml]

When I run GO111MODULE=on go mod vendor a lot of packages get updated in the vendor folder so I suggest to either commit an updated version of the vendor folder or remove it completely.

[frapposelli]

thanks for the heads up!, looks like I forgot to re-vendor the dependencies I changed yesterday and the binaries for 0.2.3 got built with the old vendor folder, not picking up the new packages.

I've just cut 0.2.4 and should be available as soon as CI finishes.

[breml]

@frapposelli thanks for your swift feedback and the new release.