Update pelican[Markdown] requirement from ~=4.9.1 to ~=4.10.0

Updates the requirements on [pelican[Markdown]](https://github.com/getpelican/pelican) to permit the latest version.
- [Release notes](https://github.com/getpelican/pelican/releases)
- [Changelog](https://github.com/getpelican/pelican/blob/main/docs/changelog.rst)
- [Commits](getpelican/pelican@4.9.1...4.10.0)

---
updated-dependencies:
- dependency-name: pelican[Markdown]
  dependency-type: direct:production
...

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

pyproject.toml

@@ -26,7 +26,7 @@ classifiers = [
     'Typing :: Typed',
 ]
 dependencies = [
-    "pelican [Markdown] ~= 4.9.1",
+    "pelican [Markdown] ~= 4.10.0",
     "typogrify ~= 2.0.7",
     # "mdx_titlecase ~= 1.2.0",  # XXX Broken!
     # XXX Use forked version of mdx-video plugin as the project is clearly unmaintained: