Revert "Revert "Update toolbox base debian image to buster.""

This reverts commit 2b6752db331b2f63867a1b32b18d92e8f08c9641.

Reason for revert: Chiron disk size was increased, so this change should no longer fail tests.

Change-Id: Ia4357ebd2053b88c631c9fcd52a8e606f9710607
Reviewed-on: https://cos-review.googlesource.com/c/cos/overlays/board-overlays/+/8880
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Saied Kazemi <saied@google.com>
diff --git a/project-lakitu/app-admin/toolbox/files/etc.default.toolbox b/project-lakitu/app-admin/toolbox/files/etc.default.toolbox
index d9fab8b..aef27df 100644
--- a/project-lakitu/app-admin/toolbox/files/etc.default.toolbox
+++ b/project-lakitu/app-admin/toolbox/files/etc.default.toolbox
@@ -3,6 +3,6 @@
 # found in the LICENSE file.
 
 TOOLBOX_DOCKER_IMAGE="gcr.io/google-containers/toolbox"
-TOOLBOX_DOCKER_TAG="20200715-00"
+TOOLBOX_DOCKER_TAG="20201104-00"
 TOOLBOX_BIND="--bind=/:/media/root/ --bind=/mnt/disks/:/media/root/mnt/disks/ --bind=/var/:/media/root/var/ --bind=/home:/media/root/home/ --bind=/etc/resolv.conf:/etc/resolv.conf"
 : ${USER:=root}