Update prebuilts to 7020263. am: 093b67a434

Original change: https://android-review.googlesource.com/c/platform/packages/modules/BootPrebuilt/5.4/arm64/+/1520554

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I88fffe007642b15f3205e75d495dda84fb4f6587
tree: bb456bdcf262f5978617bd31336f94e3362ec7db
  1. boot-userdebug.img