linux: bump latest version to 6.3

We do not need to add a hash for 6.3, as it was already added in
eadff4efe9d4 ({toolchain, linux-headers}: add support for 6.3 headers).

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
[yann.morin.1998@free.fr: explain why no hash update]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>

linux/Config.in

@@ -28,8 +28,8 @@ choice
 	prompt "Kernel version"
 
 config BR2_LINUX_KERNEL_LATEST_VERSION
-	bool "Latest version (6.1)"
-	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_1 if BR2_KERNEL_HEADERS_AS_KERNEL
+	bool "Latest version (6.3)"
+	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_6_3 if BR2_KERNEL_HEADERS_AS_KERNEL
 
 config BR2_LINUX_KERNEL_LATEST_CIP_VERSION
 	bool "Latest CIP SLTS version (5.10.162-cip24)"
@@ -128,7 +128,7 @@ endif
 
 config BR2_LINUX_KERNEL_VERSION
 	string
-	default "6.1.26" if BR2_LINUX_KERNEL_LATEST_VERSION
+	default "6.3" 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 \