build(deps): bump myst-parser

Bumps the production-dependencies group in /docs with 1 update: [myst-parser](https://github.com/executablebooks/MyST-Parser).


Updates `myst-parser` from 3.0.1 to 4.0.0
- [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
  update-type: version-update:semver-major
  dependency-group: production-dependencies
...

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

docs/requirements.txt

@@ -9,7 +9,7 @@ commonmark==0.9.1
 docutils==0.20.1
 idna==3.7
 imagesize==1.4.1
-myst-parser==3.0.1 
+myst-parser==4.0.0 
 packaging==24.1
 pyparsing==3.1.2
 pytz==2024.1