manifest: Update hal_nordic with nrfx_gpiote changes

Update hal_nordic with support for GPIOTE0 in cpurad added to
nrfx_gpiote driver.

Signed-off-by: Krzysztof Chruściński <krzysztof.chruscinski@nordicsemi.no>

Author: nordic-krch

west.yml

@@ -200,7 +200,7 @@ manifest:
       groups:
         - hal
     - name: hal_nordic
-      revision: 4eafaa44a55a557595e529f8cbdfc8dc1248da36
+      revision: pull/298/head
       path: modules/hal/nordic
       groups:
         - hal