Bump markdown2 from 2.4.1 to 2.4.3
Bump markdown2 from 2.4.1 to 2.4.3

Bumps [markdown2](https://github.com/trentm/python-markdown2) from 2.4.1 to 2.4.3.
- [Release notes](https://github.com/trentm/python-markdown2/releases)
- [Changelog](https://github.com/trentm/python-markdown2/blob/master/CHANGES.md)
- [Commits](https://github.com/trentm/python-markdown2/compare/2.4.1...2.4.3)

---
updated-dependencies:
- dependency-name: markdown2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
gpodder/mygpo,gpodder/mygpo,gpodder/mygpo,gpodder/mygpo