Bump markdown from 3.5 to 3.5.1

Bumps [markdown](https://github.com/Python-Markdown/markdown) from 3.5 to 3.5.1.
- [Release notes](https://github.com/Python-Markdown/markdown/releases)
- [Changelog](https://github.com/Python-Markdown/markdown/blob/master/docs/changelog.md)
- [Commits](Python-Markdown/markdown@3.5...3.5.1)

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

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

requirements.txt

@@ -5,7 +5,7 @@ astroquery == 0.4.6
 astroscrappy == 1.1.0
 click == 8.1.7
 cmcrameri == 1.7.0
-markdown == 3.5
+markdown == 3.5.1
 matplotlib == 3.8.1
 numpy == 1.26.1
 paramiko == 3.3.1