Bump markdown from 3.7 to 3.8.1 (#3075)

Bumps [markdown](https://github.com/Python-Markdown/markdown) from 3.7 to 3.8.1.
- [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@3.7...3.8.1)

---
updated-dependencies:
- dependency-name: markdown
  dependency-version: 3.8.1
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements.txt

@@ -1,7 +1,7 @@
 mkdocs==1.6.1
 Pygments==2.19.1
 pymdown-extensions==10.16.1
-Markdown==3.7
+Markdown==3.8.1
 mkdocs-material==9.6.5
 mkdocs-macros-plugin==1.3.7
 mkdocs-redirects==1.2.2