payloads/external/iPXE/Makefile: Use newer iPXE base revision

Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>

Author: miczyg1

payloads/external/iPXE/Makefile

@@ -4,7 +4,7 @@
 # When updating, change the name both here and in payloads/external/iPXE/Kconfig
 
 # Temporarily Dasharo fork is used until i225/i226 native support is merged.
-STABLE_COMMIT_ID=838611b34e172baee46a10b443e9f1e5f6e6344f
+STABLE_COMMIT_ID=de0e1cf11bf9f29fde4e6da77f1199091f6b90fa
 
 TAG-$(CONFIG_IPXE_MASTER)=origin/master
 TAG-$(CONFIG_IPXE_STABLE)=$(STABLE_COMMIT_ID)