configs/ci20_defconfig: bump u-boot to version 2024.01

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

configs/ci20_defconfig

@@ -23,7 +23,7 @@ BR2_LINUX_KERNEL_INSTALL_TARGET=y
 BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
 BR2_TARGET_UBOOT_CUSTOM_VERSION=y
-BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2020.07"
+BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2024.01"
 BR2_TARGET_UBOOT_BOARD_DEFCONFIG="ci20_mmc"
 BR2_TARGET_UBOOT_FORMAT_IMG=y
 BR2_TARGET_UBOOT_SPL=y