west.yml: Update hal_nordic revision

The new revision fixes an issue with channel deallocation
in nrfx_gpiote initialization.

Signed-off-by: Nikodem Kastelik <nikodem.kastelik@nordicsemi.no>

Author: nika-nordic

west.yml

@@ -54,7 +54,7 @@ manifest:
       revision: f1fa8241f8786198ba41155413243de36ed878a5
       path: modules/hal/infineon
     - name: hal_nordic
-      revision: 46b65a5a6ebb6d089431bc80a4f78746c1c90a88
+      revision: 6667950c239bc6ecb8a8bcb737c41ec98681c485
       path: modules/hal/nordic
     - name: hal_openisa
       revision: 40d049f69c50b58ea20473bee14cf93f518bf262