Upgrade libcap to libcap-2.48 am: 257a1ceb21 am: a444fa3c9c am: 8b3c95bcfd am: ffea13c81d

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I8a85b4e973bb53d10e95e9849795d02a2a7f318e