chore: bump go to 1.17

[jabley]

Use the next-gen language images as per https://circleci.com/docs/2.0/circleci-images/

Change proposed to create a new build which will pick up https://github.com/goreleaser/goreleaser/pull/2591

[andmos]

Any release or something we are waiting for to get this one out? Would be nice to squash some warnings brew gives.