poky.conf: bump version for 3.2.4 release

(From meta-yocto rev: c5087f8bc8f2b4e2292f7ebb9aa2815d69bffbfe)

Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta-poky/conf/distro/poky.conf

@@ -1,6 +1,6 @@
 DISTRO = "poky"
 DISTRO_NAME = "Poky (Yocto Project Reference Distro)"
-DISTRO_VERSION = "3.2.3"
+DISTRO_VERSION = "3.2.4"
 DISTRO_CODENAME = "gatesgarth"
 SDK_VENDOR = "-pokysdk"
 SDK_VERSION = "${@d.getVar('DISTRO_VERSION').replace('snapshot-${DATE}', 'snapshot')}"