fix(deps): update dependency @hello.nrfcloud.com/proto to ^15.3.0#50

renovate[bot] merged 1 commit intosagahello-nrfcloud/lambda-helpers:sagafrom

renovate/hello.nrfcloud.com-proto-15.xhello-nrfcloud/lambda-helpers:renovate/hello.nrfcloud.com-proto-15.xCopy head branch name to clipboard