Golang x/build: have darwin/arm64 builders on macOS 13 (Ventura)

Apple announced macOS 13 Ventura during WWDC 2022 earlier in the year. Its preview page currently says "Coming this October", which is coming up. This is the tracking issue for a builder that provides coverage for it.

For arm64 specifically, I expect we can take out some of the existing macOS 11-12 builders from their pool and update them to test with 13.

CC @golang/release, @golang/darwin.

Comment From: heschi

cc @prattmic

Comment From: dmitshur

This was done a while back (CL 532579).