support/testing: test_edk2: bump ATF to 2.12

Since edk2-202408, ATF >= 2.12 is required for qemu aarch64 sbsa target
to support CPU topology information provided by edk2 firmware [1].

If ATF <= 2.11 is used, the boot will hand with the following error:

      sbsa_sip_smc_handler: unhandled SMC (0xc20000ca) (function id: 202)

In order to update edk2 package to a newer version, update ATF version
used by TestEdk2 to 2.12.

[1] https://github.com/ARM-software/arm-trusted-firmware/commit/c891b4d83578db25d24d2a8e3e7e419e65773ac8

Cc: Julien Olivain <ju.o@free.fr>
Signed-off-by: Romain Naour <romain.naour@smile.fr>
Signed-off-by: Julien Olivain <ju.o@free.fr>

support/testing/tests/boot/test_edk2.py

@@ -26,7 +26,7 @@ class TestEdk2(infra.basetest.BRTest):
         BR2_TARGET_GRUB2_ARM64_EFI=y
         BR2_TARGET_ARM_TRUSTED_FIRMWARE=y
         BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_VERSION=y
-        BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_VERSION_VALUE="v2.11"
+        BR2_TARGET_ARM_TRUSTED_FIRMWARE_CUSTOM_VERSION_VALUE="v2.12"
         BR2_TARGET_ARM_TRUSTED_FIRMWARE_PLATFORM="qemu_sbsa"
         BR2_TARGET_ARM_TRUSTED_FIRMWARE_FIP=y
         BR2_PACKAGE_HOST_GENIMAGE=y