The buildbot configuration step shows "OS: Unkown" for Ventura bots because we don't have that version in the build_to_name_mapping list in steps.py
<rdar://problem/103371533>
Pull request: https://github.com/WebKit/WebKit/pull/7636
Committed 257877@main (f2c89b7778a1): <https://commits.webkit.org/257877@main> Reviewed commits have been landed. Closing PR #7636 and removing active labels.