nrf_grtc.h won't build with -Werror flag

[m-gorecki]

Building file that includes nrf_grtc.h header causes an error when -Werror flag is enabled:

| Error: In file included from repos/apache-mynewt-core/hw/mcu/nordic/nrf54lxx/src/hal_os_tick.c:24:
| repos/nordic-nrfx/hal/nrf_grtc.h: In function 'nrf_grtc_sys_counter_get':
| repos/nordic-nrfx/hal/nrf_grtc.h:1598:14: error: dereferencing type-punned pointer will break strict-aliasing rules [-Werror=strict-aliasing]
|  1598 |     return *((const uint64_t volatile *)&p_reg->GRTC_SYSCOUNTER.SYSCOUNTERL);
|       |             ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| repos/nordic-nrfx/hal/nrf_grtc.h: In function 'nrf_grtc_sys_counter_indexed_get':
| repos/nordic-nrfx/hal/nrf_grtc.h:1619:14: error: dereferencing type-punned pointer will break strict-aliasing rules [-Werror=strict-aliasing]
|  1619 |     return *((const uint64_t volatile *)&p_reg->SYSCOUNTER[index]);
|       |             ~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| cc1: all warnings being treated as errors

I'm using arm-gnu-toolchain-12.2.rel1-x86_64-arm-none-eabi