misc: Update gem5 version to v23.0.0.0

Change-Id: Ie14b35a62a152e3d78b16bcd4c92ec9a790f1396
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/71724
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
2 files changed