samples: bluetooth: increase timeslot overhead

When running on 52833, I observed that the sample could asser because
of a timeslot overstay. Increase the requested timeslot length to avoid
the assert.

Signed-off-by: Jan Müller <jan.mueller@nordicsemi.no>

Author: Tschet1

doc/nrf/releases_and_maturity/releases/release-notes-changelog.rst

@@ -864,6 +864,10 @@ Other libraries
 
 * Removed the following unused SDFW services: ``echo_service``, ``reset_evt_service``, and ``sdfw_update_service``.
 
+* :ref:`mod_dm` library:
+
+  * Updated the default timeslot duration to avoid an overstay assert when the ranging failed.
+
 Security libraries
 ------------------
 

subsys/dm/dm.c

@@ -60,7 +60,7 @@ LOG_MODULE_REGISTER(nrf_dm, CONFIG_DM_MODULE_LOG_LEVEL);
 #define DM_THREAD_STACK_SIZE         1536
 #endif
 
-#define DM_TIMESLOT_OVERHEAD_US      400
+#define DM_TIMESLOT_OVERHEAD_US      420
 #define DM_REFLECTOR_OVERHEAD_US     2000
 
 static K_MUTEX_DEFINE(ranging_mtx);