west.yml: Update west to point to the recent changes for hal_stm32

Update west.yml to point to the recent changes for hal_stm32.

Signed-off-by: Ali Hozhabri <[email protected]>

Author: HoZHel

west.yml

@@ -245,7 +245,7 @@ manifest:
       groups:
         - hal
     - name: hal_stm32
-      revision: 611d54c237623ea71a367502bfbd736fc67ba15f
+      revision: pull/303/head
       path: modules/hal/stm32
       groups:
         - hal