package/libzlib: fix CPE vendor id
gnu vendor is not found for zlib in CPE database [1].
zlib is the correct vendor [2].
[1] https://nvd.nist.gov/products/cpe/search/results?namingFormat=2.3&keyword=cpe:2.3:a:gnu:zlib
[2] https://nvd.nist.gov/products/cpe/search/results?namingFormat=2.3&keyword=cpe:2.3:a:zlib:zlib
Signed-off-by: Marcus Hoffmann <marcus.hoffmann@othermo.de>
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
(cherry picked from commit 7a94fa901293bda6e0e87eff5dcb677b856c70b4)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Marcus Hoffmann