Bump myst-parser from 0.18.0 to 0.18.1

Bumps [myst-parser](https://github.com/executablebooks/MyST-Parser) from 0.18.0 to 0.18.1.
- [Release notes](https://github.com/executablebooks/MyST-Parser/releases)
- [Changelog](https://github.com/executablebooks/MyST-Parser/blob/master/CHANGELOG.md)
- [Commits](executablebooks/MyST-Parser@v0.18.0...v0.18.1)

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

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

Author: dependabot[bot]

docs/requirements-docs.txt

@@ -1,6 +1,6 @@
 sphinx==4.5.0
 linkify-it-py==2.0.0
-myst-parser==0.18.0
+myst-parser==0.18.1
 myst-nb==0.16.0
 ruyaml==0.19.2
 sphinx-autoapi==1.9.0