manifest: Update nRF hw models to latest

Update the HW models module to:
8b6001d6bdd9e2c8bb858fdb26f696f6d5f73db5

Including the following:
8b6001d CLOCK (54): Fix XOTUNE subscription sideeffecting for nrf54L15
9af1ac8 nRF54LM20: Bugfix: Add missing UART configuration
e6af4a7 RADIO: Fix register init for some devices (at least nRF54LM20)
2fe99ab CLOCK (54): Add XO24M/PLL24M/HFCLK24M
ffd578a CLOCK (54): Fixes around XOTUNE

Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>

Author: aescolar

west.yml

@@ -328,7 +328,7 @@ manifest:
       groups:
         - tools
     - name: nrf_hw_models
-      revision: 6e5961223f81aa2707c555db138819a5c1b7942c
+      revision: 8b6001d6bdd9e2c8bb858fdb26f696f6d5f73db5
       path: modules/bsim_hw_models/nrf_hw_models
     - name: nrf_wifi
       revision: 787eea1a3c8dd13c86214e204a919e6f9bcebf91