Fix #1304 ssl_context is not passed from async web_client to aiohttp socket client#1307

seratch merged 2 commits intoslackapi:mainslackapi/python-slack-sdk:mainfrom

seratch:issue-1304-ssl-for-async-socket-modeseratch/python-slack-sdk:issue-1304-ssl-for-async-socket-modeCopy head branch name to clipboard