poky.conf: bump version for 3.3.6 release

(From meta-yocto rev: c381b983b12536c10a03ac1ca0ec59d0e64088d8)

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 = "3.3.5"
+DISTRO_VERSION = "3.3.6"
 DISTRO_CODENAME = "hardknott"
 SDK_VENDOR = "-pokysdk"
 SDK_VERSION = "${@d.getVar('DISTRO_VERSION').replace('snapshot-${METADATA_REVISION}', 'snapshot')}"