chore(deps): Update myst-parser requirement from ~=3.0.1 to ~=4.0.0

Updates the requirements on [myst-parser](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@v3.0.1...v4.0.0)

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

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

requirements.txt

@@ -1,4 +1,4 @@
 Sphinx~=7.3.7
 furo~=2024.7.18
-myst-parser~=3.0.1
+myst-parser~=4.0.0
 sphinxext-opengraph~=0.9.1