[auto-pkg-updater] Update sys-apps/sandbox

Upgraded sys-apps/sandbox to v2.29-r1

BUG=b/322129624
TEST=presubmit
RELEASE_NOTE=Upgraded sys-apps/sandbox to v2.29-r1.

Change-Id: I65c3e4ac366142fca1e9f56748dbd4161350be30
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/chromiumos-overlay/+/64185
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Chenglong Tang <chenglongtang@google.com>
Reviewed-by: Robert Kolchmeyer <rkolchmeyer@google.com>
2 files changed