Draft: build: update golangci-lint config

What does this MR do?

• Updates golangci-lint and refactor .golangci.yml.
• Remove deprecated options. Ex: run.deadline. See https://github.com/golangci/golangci-lint/pull/822
• Remove golint (deprecated). See https://github.com/golangci/golangci-lint/pull/1965, https://github.com/golang/go/issues/38968, https://github.com/golang/lint/commit/6edffad5e6160f5949cdefc81710b2706fbcd4f6
• Remove varcheck, structcheck, and deadcode (deprecated). See https://github.com/golangci/golangci-lint/issues/1841
• Add gochecknoinits to fix #342
• Add new linters to replace deprecated linters, enforce gitlab go style guidelines and modern go practices
• Linters run in parallel

Note: This is part of an effort to speed up testing/CI.

Closes #342
Closes #247

TODO

• I added the Changelog (e.g. Changelog: feature) trailer to the commits that need to be included in the changelog
• I added unit tests or they are not required
• I added acceptance tests or they are not required
• I added documentation (or it's not required)
• I followed code review guidelines
• I followed Go Style guidelines