manifest: Update hal_nordic revision to fix nrfx_pwm driver

Update the hal_nordic module revision to fix a copy-paste bug in
the nrfx_pwm driver that prevents PWM pins from being configured.

Signed-off-by: Andrzej Głąbek <andrzej.glabek@nordicsemi.no>
diff --git a/west.yml b/west.yml
index c82acb8..5632749 100644
--- a/west.yml
+++ b/west.yml
@@ -88,7 +88,7 @@
       groups:
         - hal
     - name: hal_nordic
-      revision: f6b23344f6bdfb490ac7d038344174a99fa75d45
+      revision: a42b016d7c7610489f5f8c79773fedc05ba352ee
       path: modules/hal/nordic
       groups:
         - hal