Upgrade libcap to libcap-2.48 am: 257a1ceb21 am: a444fa3c9c

Original change: https://android-review.googlesource.com/c/platform/external/libcap/+/1577304

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I8971b50e70e6a5e77ad6d6febd2ecf0beaddce6b