Update myst-parser[linkify] requirement

Updates the requirements on [myst-parser[linkify]](https://github.com/executablebooks/MyST-Parser) to permit the latest version.
- [Release notes](https://github.com/executablebooks/MyST-Parser/releases)
- [Changelog](https://github.com/executablebooks/MyST-Parser/blob/master/CHANGELOG.md)
- [Commits](executablebooks/MyST-Parser@v2.0.0...v4.0.1)

---
updated-dependencies:
- dependency-name: myst-parser[linkify]
  dependency-type: direct:production
...

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Author: dependabot[bot]

pyproject.toml

@@ -9,7 +9,7 @@ dependencies = [
     "Sphinx<8.0.0,>=7.2.6",
     "ablog<1.0.0,>=0.11.6",
     "pydata-sphinx-theme<1.0.0,>=0.15.2",
-    "myst-parser[linkify]<3.0.0,>=2.0.0",
+    "myst-parser[linkify]>=2.0.0,<5.0.0",
     "sphinxcontrib-youtube<2.0.0,>=1.4.1",
     "sphinx-sitemap<3.0.0,>=2.5.1",
     "sphinxext-opengraph<1.0.0,>=0.9.1",