bump version to 0.5.6

Author: kvinwang

meta-dstack/conf/distro/dstack.conf

@@ -4,7 +4,7 @@ DISTRO_NAME = "DStack"
 DISTRO_FEATURES:append = " virtualization seccomp systemd usrmerge security dm-verity ipv6"
 DISTRO_FEATURES_BACKFILL_CONSIDERED += "sysvinit"
 
-DISTRO_VERSION = "0.5.5"
+DISTRO_VERSION = "0.5.6"
 DISTROOVERRIDES = "poky:dstack"
 INITRAMFS_IMAGE = ""
 VOLATILE_LOG_DIR = "no"