docs: update section about supported Go versions

See merge request !805

feat(gc): record event type for manifest tasks queued due to list delete

See merge request !801

feat(gc): record event type for manifest tasks queued due to a tag delete or switch

See merge request !802

# [3.16.0](v3.15.0-gitlab...v3.16.0-gitlab) (2021-11-18)

### Features

* **gc:** record event type for manifest tasks queued due to a tag delete or switch ([e0d918ab](e0d918ab))
* **gc:** record event type for manifest tasks queued due to list delete ([68828ea1](68828ea1))