Upgrade libcap to libcap-2.47 am: 47fac93ec3 am: c98ec7111e

Original change: https://android-review.googlesource.com/c/platform/external/libcap/+/1559975

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Id65ef8c5e48b7404631898ce74e1e1d02843ca6e