unzip: Exclude CVE-2008-0888 from cve-check

The patch mentioned as the fix for the CVE is applied to the 6.0 source
code. Zip versioning makes CPE entry changes hard.

(From OE-Core rev: 4ff9d2c57d9cade1faa3916f171e5ad96ee32487)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 8917e5ae2bb44d017fc0155f16632c5decadb0bd)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>