linux: bump latest version to 6.12

Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: Romain Naour <romain.naour@smile.fr>

linux/Config.in

@@ -28,8 +28,8 @@ choice
 	prompt "Kernel version"
 
 config BR2_LINUX_KERNEL_LATEST_VERSION
-	bool "Latest version (6.11)"
-	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_11 if BR2_KERNEL_HEADERS_AS_KERNEL
+	bool "Latest version (6.12)"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_12 if BR2_KERNEL_HEADERS_AS_KERNEL
 
 config BR2_LINUX_KERNEL_LATEST_CIP_VERSION
 	bool "Latest CIP SLTS version (5.10.162-cip24)"
@@ -134,7 +134,7 @@ config BR2_LINUX_KERNEL_CUSTOM_REPO_GIT_SUBMODULES
 
 config BR2_LINUX_KERNEL_VERSION
 	string
-	default "6.11.11" if BR2_LINUX_KERNEL_LATEST_VERSION
+	default "6.12.3" if BR2_LINUX_KERNEL_LATEST_VERSION
 	default "5.10.162-cip24" if BR2_LINUX_KERNEL_LATEST_CIP_VERSION
 	default "5.10.162-cip24-rt10" if BR2_LINUX_KERNEL_LATEST_CIP_RT_VERSION
 	default BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE \