Update amd_blobs submodule to upstream main branch

Updating from commit id 68ebd4b567f4 (2023-11-27):
  PCO: Update ABL to version CABLRV21080200

to commit id eb91266f01db (2023-11-29):
  MDN: Update mendocino SMU to 90.43.0

This brings in 1 new commit:
eb91266f01 MDN: Update mendocino SMU to 90.43.0

Change-Id: Iebc3d0ffe9874a84cac9cafc7b7b3514d251e4a5
Signed-off-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/79315
Reviewed-by: Jason Glenesk <jason.glenesk@gmail.com>
Reviewed-by: Jon Murphy <jpmurphy@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/3rdparty/amd_blobs b/3rdparty/amd_blobs
index 68ebd4b..eb91266 160000
--- a/3rdparty/amd_blobs
+++ b/3rdparty/amd_blobs
@@ -1 +1 @@
-Subproject commit 68ebd4b567f467d2045c19251bb632fa337d99b6
+Subproject commit eb91266f01db2d276614dc20d8d0f857e6ffbf00