chore(deps-dev): update myst-parser requirement

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@v4.0.1...v5.0.0)

---
updated-dependencies:
- dependency-name: myst-parser
  dependency-version: 5.0.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

pyproject.toml

@@ -167,7 +167,7 @@ dev = [
     "furo>=2025.9.25",
     "git-cliff>=2.10.1,<3",
     "mypy>=1.19.0,<2",
-    "myst-parser>=4.0.1,<5",
+    "myst-parser>=4.0.1,<6",
     "nox[uv]>=2025.11.12",
     "pip-audit>=2.10.0,<3",
     "pip-licenses @ git+https://github.com/neXenio/pip-licenses.git@master", # https://github.com/raimon49/pip-licenses/pull/224