manifest: Update nRF hw models to latest

Update the HW models module to:
6c389b9b5fa0a079cd4502e69d375da4c0c289b7

Including the following:
* 6c389b9 PPI (52): Connect CCM TASK_RATEOVERRIDE
* 2056253 CCM: Change TASK RATEOVERRIDE warning to info

(cherry picked from commit fd236ee)

Original-Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
GitOrigin-RevId: fd236ee
Change-Id: I9c937618216de41b9d1c0200ca450ff1fb85fcad
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/zephyr/+/5607931
Commit-Queue: Fabio Baltieri <fabiobaltieri@google.com>
Tested-by: ChromeOS Prod (Robot) <chromeos-ci-prod@chromeos-bot.iam.gserviceaccount.com>
Reviewed-by: Fabio Baltieri <fabiobaltieri@google.com>

west.yml

@@ -300,7 +300,7 @@ manifest:
  groups:
  - tools
  - name: nrf_hw_models
- revision: 4447a22aea5e791c9bd18e7d71cc092623ddd2bb
+ revision: 6c389b9b5fa0a079cd4502e69d375da4c0c289b7
  path: modules/bsim_hw_models/nrf_hw_models
  - name: open-amp
  revision: da78aea63159771956fe0c9263f2e6985b66e9d5