configs/stm32f769_disco_sd: bump Linux to 5.15.186 and U-Boot to 2025.07

The patch bumps the Linux kernel to version 5.15.186 and U-Boot to
version 2025.07.

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Signed-off-by: Julien Olivain <ju.o@free.fr>

board/stmicroelectronics/stm32f769-disco/patches/linux/linux.hash

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256  9319a47b1e9b5d344ff6015431856d0c9640e4faedc527c87f9129061a27136f  linux-5.15.179.tar.xz
+sha256  9c4efdd7ee550d524c017b5dae27725374526311e983661850cd880af671cb2a  linux-5.15.186.tar.xz

board/stmicroelectronics/stm32f769-disco/patches/uboot/uboot.hash

@@ -1,2 +1,2 @@
 # Locally calculated
-sha256  439d3bef296effd54130be6a731c5b118be7fddd7fcc663ccbc5fb18294d8718  u-boot-2025.04.tar.bz2
+sha256  0f933f6c5a426895bf306e93e6ac53c60870e4b54cda56d95211bec99e63bec7  u-boot-2025.07.tar.bz2

configs/stm32f769_disco_sd_defconfig

@@ -8,7 +8,7 @@ BR2_ROOTFS_POST_IMAGE_SCRIPT="support/scripts/genimage.sh"
 BR2_ROOTFS_POST_SCRIPT_ARGS="-c board/stmicroelectronics/stm32f769-disco/genimage.cfg"
 BR2_LINUX_KERNEL=y
 BR2_LINUX_KERNEL_CUSTOM_VERSION=y
-BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.15.179"
+BR2_LINUX_KERNEL_CUSTOM_VERSION_VALUE="5.15.186"
 BR2_LINUX_KERNEL_DEFCONFIG="stm32"
 BR2_LINUX_KERNEL_CONFIG_FRAGMENT_FILES="$(LINUX_DIR)/arch/arm/configs/dram_0xc0000000.config board/stmicroelectronics/stm32f769-disco/linux-sd.fragment"
 BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM=y
@@ -23,7 +23,7 @@ BR2_TARGET_ROOTFS_EXT2_SIZE="32M"
 BR2_TARGET_UBOOT=y
 BR2_TARGET_UBOOT_BUILD_SYSTEM_KCONFIG=y
 BR2_TARGET_UBOOT_CUSTOM_VERSION=y
-BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2025.04"
+BR2_TARGET_UBOOT_CUSTOM_VERSION_VALUE="2025.07"
 BR2_TARGET_UBOOT_BOARD_DEFCONFIG="stm32f769-disco"
 BR2_TARGET_UBOOT_NEEDS_OPENSSL=y
 BR2_PACKAGE_HOST_GENIMAGE=y