manifest: sdk-zephyr: Cherry-pick two fromtree commits needed by protocols serialization#22294

rlubos merged 1 commit intonrfconnect:mainnrfconnect/sdk-nrf:mainfrom

NordicBuilder:auto-manifest-sdk-zephyr-2859NordicBuilder/sdk-nrf:auto-manifest-sdk-zephyr-2859Copy head branch name to clipboard