Update docker.io/library/golang Docker tag to v1.20.2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
docker.io/library/golang	final	patch	1.20.1 -> 1.20.2
docker.io/library/golang	stage	patch	1.20.1 -> 1.20.2
docker.io/library/golang	final	minor	1.19.5 -> 1.20.2

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

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

🔕 Ignore: Close this PR and you won't be reminded about these updates again.

---

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

---

This PR has been generated by Mend Renovate. View repository job log here.

[barkbay]

@elasticmachine run elasticsearch-ci/docs

[barkbay]

Looks like it has been reverted on purpose: #6420
I tried to run make lint on a locally built CI image but it's failing with:

GOGC=50 golangci-lint run --verbose
INFO [config_reader] Config search paths: [./ /go/src/github.com/elastic/cloud-on-k8s /go/src/github.com/elastic /go/src/github.com /go/src /go / /root]
INFO [config_reader] Used config file .golangci.yml
INFO [lintersdb] Active 40 linters: [asciicheck bodyclose deadcode dogsled durationcheck errcheck errorlint exhaustive exportloopref forcetypeassert gocritic goheader goimports goprintffuncname gosec gosimple govet importas ineffassign makezero misspell nakedret nestif nilerr noctx nolintlint prealloc predeclared revive staticcheck structcheck thelper tparallel typecheck unconvert unparam unused varcheck wastedassign whitespace]
INFO [loader] Go packages loading at mode 575 (name|types_sizes|compiled_files|deps|exports_file|files|imports) took 3m16.073783471s
INFO [runner/filename_unadjuster] Pre-built 0 adjustments in 174.117366ms
INFO [linters context] importas settings found, but no aliases listed. List aliases under alias: key.
make: *** [Makefile:184: lint] Killed

Not sure what's going on, should we create an issue and add a comment to explain to the reviewers why we should not update the image here?

[thbkrkr]

I should have at least left a comment. The goal was and still is to get rid of this image (Jenkins ci docker image).
We should soon be able to delete it and replace it with the bk agent image to avoid maintaining two images that are almost similar.

[renovate]

Edited/Blocked Notification

Renovate will not automatically rebase this PR, because it does not recognize the last commit author and assumes somebody else may have edited the PR.

You can manually request rebase by checking the rebase/retry box above.

⚠ Warning: custom changes will be lost.

[thbkrkr]

@elasticmachine run elasticsearch-ci/docs