Update myst-parser requirement from <2.1,>=1.0 to >=1.0,<3.1

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@v1.0.0...v3.0.1)

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

Signed-off-by: dependabot[bot] <support@github.com>

pyproject.toml

@@ -44,7 +44,7 @@ dev = [
     "wheel",
     "Sphinx>=4.3.0,<7.1.0",
     "furo==2023.7.26",
-    "myst-parser>=1.0,<2.1",
+    "myst-parser>=1.0,<3.1",
     "sphinx-copybutton==0.5.2",
     "sphinx-autobuild==2021.3.14",
     "sphinx-autodoc-typehints==1.23.3",