samples: mpsl: timeslot: Switch sample to nrf54lm20dk

Switch sample after nrf54lm20pdk was renamed to nrf54lm20dk.

Signed-off-by: Sebastian Głąb <[email protected]>

Author: nordic-segl

samples/mpsl/timeslot/sample.yaml

@@ -13,7 +13,7 @@ tests:
       - nrf54l15dk/nrf54l10/cpuapp
       - nrf54l15dk/nrf54l15/cpuapp
       - nrf54h20dk/nrf54h20/cpurad
-      - nrf54lm20pdk/nrf54lm20a/cpuapp
+      - nrf54lm20dk/nrf54lm20a/cpuapp
     platform_allow:
       - nrf52dk/nrf52832
       - nrf52840dk/nrf52840
@@ -22,7 +22,7 @@ tests:
       - nrf54l15dk/nrf54l10/cpuapp
       - nrf54l15dk/nrf54l15/cpuapp
       - nrf54h20dk/nrf54h20/cpurad
-      - nrf54lm20pdk/nrf54lm20a/cpuapp
+      - nrf54lm20dk/nrf54lm20a/cpuapp
     tags:
       - ci_build
       - sysbuild