3rdparty/blobs: Update to include STM binary

Change-Id: I5f053c1270bab71aeab3bb785c60417419736b44
Signed-off-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38717
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: ron minnich <rminnich@gmail.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

3rdparty/blobs

@@ -1 +1 @@
-Subproject commit 034b27818450428f70aa9316c8bd0d65bacd8ee8
+Subproject commit 7ad2d22452225a14c19b17570cb77920d8fc81a5