chore(deps): update docker.io/library/golang docker tag to v1.16.6

This MR contains the following updates:

Package	Type	Update	Change
docker.io/library/golang	final	patch	1.16.5-alpine -> 1.16.6-alpine

---

Configuration

Schedule: At any time (no schedule defined).

Automerge: Enabled.

Rebasing: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox.

Ignore: Close this MR and you won't be reminded about this update again.

---

• If you want to rebase/retry this MR, check this box.

---

This MR has been generated by Renovate Bot. The local configuration can be found in the SI Renovate Bot repository.

Dockerfile

-FROM docker.io/library/golang:1.16.5-alpine
+FROM docker.io/library/golang:1.16.6-alpine
 
 ARG VERSION=master