git: 8f38cbcd9c4a..f1aa8e6d5147 - vendor/libarchive - vendor branch updated

[Martin Matuska]

The branch vendor/libarchive has been updated by mm:

URL: https://cgit.FreeBSD.org/src/log/?id=8f38cbcd9c4a..f1aa8e6d5147

f1aa8e6d5147 Update vendor/libarchive to 3.8.3