manifest: update hal_nordic revision

The hal_nordic revision was updated to bring in nrfx v3.9.0.

Signed-off-by: Nikodem Kastelik <[email protected]>

Author: nika-nordic

west.yml

@@ -188,7 +188,7 @@ manifest:
       groups:
         - hal
     - name: hal_nordic
-      revision: 5c8d109371ebb740fbef1f440a3b59e488a36717
+      revision: pull/257/head
       path: modules/hal/nordic
       groups:
         - hal