flavours/linux/local.conf.sample: Bump CONF_VERSION

This will sync the local conf version with the metadata.

Signed-off-by: Andrei Gherzan <andrei.gherzan@huawei.com>

flavours/linux/local.conf.sample

@@ -244,7 +244,7 @@ PACKAGECONFIG_append_pn-qemu-system-native = " sdl"
 # CONF_VERSION is increased each time build/conf/ changes incompatibly and is used to
 # track the version of this file when it was generated. This can safely be ignored if
 # this doesn't mean anything to you.
-CONF_VERSION = "1"
+CONF_VERSION = "2"
 
 # Use Oniro Project download cache default.
 # Note that this cache is limited to system configurations that are entirely