3rdparty/intel-sec-tools: Update submodule pointer

This includes the bg-prov tool.

Change-Id: Iba8efe3bcb67694da76ef78abaa0562d47f7850b
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50408
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Christian Walter <christian.walter@9elements.com>

3rdparty/intel-sec-tools

@@ -1 +1 @@
-Subproject commit a86ff5d400983d685d4389c07433452c7a503300
+Subproject commit 2b028cc0e3cdaf1aa3110b6367eb232e9ec9d9c8