git: f2cd95a37200..77a6696abb69 - vendor/libarchive - vendor branch updated

[Martin Matuska]

The branch vendor/libarchive has been updated by mm:

URL: https://cgit.FreeBSD.org/src/log/?id=f2cd95a37200..77a6696abb69

77a6696abb69 Update vendor/libarchive to 3.8.8