Bump myst-parser from 1.0.0 to 2.0.0

Bumps [myst-parser](https://github.com/executablebooks/MyST-Parser) from 1.0.0 to 2.0.0.
- [Release notes](https://github.com/executablebooks/MyST-Parser/releases)
- [Changelog](https://github.com/executablebooks/MyST-Parser/blob/master/CHANGELOG.md)
- [Commits](executablebooks/MyST-Parser@v1.0.0...v2.0.0)

---
updated-dependencies:
- dependency-name: myst-parser
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

requirements/docs.txt

@@ -1,5 +1,5 @@
 sphinx ==5.3.0
-myst-parser ==1.0.0
+myst-parser ==2.0.0
 nbsphinx ==0.9.3
 ipython[all] ==8.22.1
 pandoc ==2.3