west: Update silabs hal module to add gcc 14.3 compat fix

This pulls in a trivial type checking error which gcc 14.3 catches
between a function prototype and a definition where a parameter type
is declared as a enum by the prototype and uint8_t by the definition.

Signed-off-by: Keith Packard <keithp@keithp.com>

Author: keith-packard

west.yml

@@ -235,7 +235,7 @@ manifest:
       groups:
         - hal
     - name: hal_silabs
-      revision: 190a144a16bed9a938a94543ed5bbc70c0552e0f
+      revision: pull/123/head
       path: modules/hal/silabs
       groups:
         - hal