Bump mistune from 0.8.4 to 3.0.2

Bumps [mistune](https://github.com/lepture/mistune) from 0.8.4 to 3.0.2.
- [Release notes](https://github.com/lepture/mistune/releases)
- [Changelog](https://github.com/lepture/mistune/blob/v3.0.2/docs/changes.rst)
- [Commits](lepture/mistune@v0.8.4...v3.0.2)

---
updated-dependencies:
- dependency-name: mistune
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -39,7 +39,7 @@ lazy-object-proxy==1.9.0
 m2r==0.3.1
 MarkupSafe==2.1.3
 mccabe==0.6.1
-mistune==0.8.4
+mistune==3.0.2
 mock==2.0.0
 multidict==5.1.0
 packaging==21.0