Update tox to 4.23.0#370

pyup-bot wants to merge 1 commit intomasterrtfol/aiohttp-sse-client:masterfrom

pyup-update-tox-3.23.0-to-4.23.0rtfol/aiohttp-sse-client:pyup-update-tox-3.23.0-to-4.23.0Copy head branch name to clipboard