package/zsh: add ZSH_CPE_ID_VENDOR

cpe:2.3:a:zsh:zsh is a valid CPE identifier for this package:

  https://nvd.nist.gov/products/cpe/search/results?namingFormat=2.3&keyword=cpe%3A2.3%3Aa%3Azsh%3Azsh

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/zsh/zsh.mk

@@ -12,6 +12,7 @@ ZSH_CONF_OPTS = --bindir=/bin
 ZSH_CONF_ENV = zsh_cv_sys_nis=no zsh_cv_sys_nis_plus=no
 ZSH_LICENSE = MIT-like
 ZSH_LICENSE_FILES = LICENCE
+ZSH_CPE_ID_VENDOR = zsh
 
 ifeq ($(BR2_PACKAGE_GDBM),y)
 ZSH_CONF_OPTS += --enable-gdbm