update deps; fix go 1.13

[dajohi]

No description provided.

[CLAassistant]

Thank you for your submission, we really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[Helcaraxan]

FWIW. There are already 2 other PRs (#583, #605) that address the same issue but without updating all dependencies (to keep the diff minimal).

[jirfag]

Hi, thank you for the pull request! I've already merged a few pull requests fixing the same things.