Update cmake to 3.26.4

Also switch to use LLVM-exception in portage-stable

BUG=b/347026719
TEST=presubmit
RELEASE_NOTE=None

Change-Id: I563e21901903efc9dbb66bfccd834019b89508ac
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/portage-stable/+/77463
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Robert Kolchmeyer <rkolchmeyer@google.com>
11 files changed