Bump mistletoe from 0.8.1 to 0.8.2

Bumps [mistletoe](https://github.com/miyuchina/mistletoe) from 0.8.1 to 0.8.2.
- [Release notes](https://github.com/miyuchina/mistletoe/releases)
- [Changelog](https://github.com/miyuchina/mistletoe/blob/master/cutting-a-release.md)
- [Commits](https://github.com/miyuchina/mistletoe/compare/v0.8.1...v0.8.2)

---
updated-dependencies:
- dependency-name: mistletoe
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -14,5 +14,5 @@ httpx-socks[asyncio]==0.7.2
 langdetect==1.0.9
 setproctitle==1.2.2
 redis==4.1.3
-mistletoe==0.8.1
+mistletoe==0.8.2
 typing_extensions==4.0.1