Merge "[dm][refactoring] Use hex crate to encode/decode hex string" into main am: c09010aaf3

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Virtualization/+/2855605

Change-Id: I2d12fe67dafef60d8e57f22bfdf66850d9cbfab8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>