Upgrade toybox to 6800a95ef32826e753881802a2c126c59d451397

This project was upgraded with external_updater.
Usage: tools/external_updater/updater.sh update external/toybox
For more info, check https://cs.android.com/android/platform/superproject/+/main:tools/external_updater/README.md

Test: TreeHugger
Change-Id: I58117099abc100bd070cf3641e788b6a996a77ca