third_party/intel_ucode: update to 20230808

This fixes the Intel Gather Data Sampling aka Downfall (CVE-2022-40982)
microarchitectural data disclosure vulnerability.

Change-Id: Ib185e8763f15e2af9fca2b89671825e5e87480fa
Reviewed-on: https://review.monogon.dev/c/monogon/+/2042
Tested-by: Jenkins CI
Reviewed-by: Leopold Schabel <leo@monogon.tech>
diff --git a/WORKSPACE b/WORKSPACE
index c76fe4b..265044a 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -147,7 +147,7 @@
 
 intel_ucode_external(
     name = "intel_ucode",
-    version = "20230214",
+    version = "20230808",
 )
 
 load("//third_party/edk2:external.bzl", "edk2_external")