Mention update to multidict 3.0 in changelog
Mention update to multidict 3.0 in changelog

hellysmile/aiohttp,arthurdarcet/aiohttp,KeepSafe/aiohttp,Eyepea/aiohttp,hellysmile/aiohttp,arthurdarcet/aiohttp,pfreixes/aiohttp,arthurdarcet/aiohttp,pfreixes/aiohttp,KeepSafe/aiohttp,rutsky/aiohttp,playpauseandstop/aiohttp,rutsky/aiohttp,KeepSafe/aiohttp,rutsky/aiohttp