poky.conf: Bump version for 5.2 walnascar release

(From meta-yocto rev: cc5255e3f67566b6e1804097780d49e0c0352480)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta-poky/conf/distro/poky.conf

@@ -1,7 +1,7 @@
 DISTRO = "poky"
 DISTRO_NAME = "Poky (Yocto Project Reference Distro)"
-DISTRO_VERSION = "5.1"
-DISTRO_CODENAME = "styhead"
+DISTRO_VERSION = "5.2"
+DISTRO_CODENAME = "walnascar"
 SDK_VENDOR = "-pokysdk"
 SDK_VERSION = "${@d.getVar('DISTRO_VERSION').replace('snapshot-${METADATA_REVISION}', 'snapshot')}"
 SDK_VERSION[vardepvalue] = "${SDK_VERSION}"
@@ -31,8 +31,8 @@ DISTRO_EXTRA_RRECOMMENDS += "${POKY_DEFAULT_EXTRA_RRECOMMENDS}"
 PACKAGE_CLASSES ?= "package_rpm"
 
 SANITY_TESTED_DISTROS ?= " \
-            poky-5.0 \n \
             poky-5.1 \n \
+            poky-5.2 \n \
             ubuntu-20.04 \n \
             ubuntu-22.04 \n \
             ubuntu-24.04 \n \