tests: Replace nRF54H20 PDK with nRF54H20 DK

nRF54H20 PDK is superseded by nRF54H20 DK and will no longer be
supported.

Signed-off-by: Andrzej Głąbek <[email protected]>

Author: anangl

tests/arch/common/ramfunc/boards/nrf54h20pdk_nrf54h20_cpuapp.overlay renamed to tests/arch/common/ramfunc/boards/nrf54h20dk_nrf54h20_cpuapp.overlay

@@ -37,8 +37,8 @@ tests:
     # Exclude nRF54L15 and nRF54H20 as Nordic HAL is not compatible with C++98.
     platform_exclude:
       - nrf54l15pdk/nrf54l15/cpuapp
-      - nrf54h20pdk/nrf54h20/cpuapp
-      - nrf54h20pdk/nrf54h20/cpurad
+      - nrf54h20dk/nrf54h20/cpuapp
+      - nrf54h20dk/nrf54h20/cpurad
     build_only: true
     extra_configs:
       - CONFIG_STD_CPP98=y