Update vendor/libarchive to libarchive master 83e8b0ea8

#2147 archive_string: clean up strncat_from_utf8_to_utf8 (36047967a)
#2153 archive_match: check archive_read_support_format_raw()

return value (0ce1b4c38)

#2154 archive_match: turn counter into flag (287e05d53)
#2155 lha: Do not allow negative file sizes (93b11caed)
#2156 tests: setenv LANG to en_US.UTF-8 in bsdunzip test_I.c (83e8b0ea8)

Obtained from: libarchive
Libarchive commit: 83e8b0ea8c3b07e07ac3dee90a8724565f8e53fd