modules/psa-arch-tests: Add GCC 14.3 support patch

psa-arch-tests includes device drivers that failed to mark
registers with 'volatile'. GCC 14.3 cleverly optimized
sequential register accesses using strd/ldrd instructions which
caused the drivers to fail.

Signed-off-by: Keith Packard <keithp@keithp.com>
diff --git a/submanifests/optional.yaml b/submanifests/optional.yaml
index 04bdd66..81985cb 100644
--- a/submanifests/optional.yaml
+++ b/submanifests/optional.yaml
@@ -23,7 +23,7 @@
       groups:
         - optional
     - name: psa-arch-tests
-      revision: 2cadb02a72eacda7042505dcbdd492371e8ce024
+      revision: pull/14/head
       path: modules/tee/tf-m/psa-arch-tests
       remote: upstream
       groups: