tools: Update nrfutil device to 2.15.7#26435

jangalda-nsc merged 3 commits intonrfconnect:mainnrfconnect/sdk-nrf:mainfrom

jangalda-nsc:nrfutil-device-2.15.7jangalda-nsc/sdk-nrf:nrfutil-device-2.15.7Copy head branch name to clipboard