Automatic merge from submit-queue (batch tested with PRs 49488, 50407, 46105, 50456, 50258)

Manage BUILD files using gazelle + kazel

**What this PR does / why we need it**: uses the upstream `gazelle` tool to manage go rules in BUILD files.
This is needed to support Bazel builds on Mac OS and Bazel cross compilation in general.

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #47558

**Special notes for your reviewer**:
It's probably easiest to review this commit-by-commit:
* bump to latest `rules_go` (for recent `cgo_library` and `gazelle` improvements)
* update `kazel` with recent compatibility fixes (https://github.com/kubernetes/repo-infra/pull/28, https://github.com/kubernetes/repo-infra/pull/27), update `hack` scripts to download/build `gazelle`, and then run both `gazelle` and `kazel`. (Additionally make `gazelle` skip things it shouldn't touch.)
* run `hack/update-bazel.sh` to autogenerate everything
* remove the old `cgo_genrule` rules - these are now part of `go_library`
* remove the `automanaged` tags from all go rules - `gazelle` doesn't use them, and it prevents an old version of `kazel/gazel` from messing with the rules
* remove the `licenses()` rules from everywhere but `third_party/` - we don't need them, and `gazelle` won't add them on new `BUILD` files it generates.

**Release note**:

```release-note
NONE
```
for review:
/assign @mikedanese @spxtr 
for approval:
/assign @thockin