chore(deps): update myst-parser requirement from >=0.19.2 to >=3.0.1 (#707)

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@v0.19.2...v3.0.1)

---
updated-dependencies:
- dependency-name: myst-parser
  dependency-version: 3.0.1
  dependency-type: direct:production
...

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Author: dependabot[bot]

docs/requirements.txt

@@ -1,3 +1,3 @@
 sphinx>=5.0.0
 sphinx_rtd_theme==2.0.0
-myst_parser>=0.19.2
+myst_parser>=3.0.1