submodule: bump openthread from 8bc2504 to 13e7c4e#199

dependabot[bot] wants to merge 1 commit into

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

dependabot/submodules/openthread-13e7c4eTexasInstruments/ot-ti:dependabot/submodules/openthread-13e7c4eCopy head branch name to clipboard