submodule: bump openthread from 8bc2504 to e4479fb#200

dependabot[bot] wants to merge 1 commit into

thread-v1.3-tiTexasInstruments/ot-ti:thread-v1.3-tifrom

dependabot/submodules/openthread-e4479fbTexasInstruments/ot-ti:dependabot/submodules/openthread-e4479fbCopy head branch name to clipboard