build(deps): update termynal requirement

Updates the requirements on [termynal](https://github.com/termynal/termynal.py) to permit the latest version.
- [Changelog](https://github.com/termynal/termynal.py/blob/main/CHANGELOG.md)
- [Commits](termynal/termynal.py@v0.12.2...v0.13.0)

---
updated-dependencies:
- dependency-name: termynal
  dependency-type: direct:production
...

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

requirements/documentation.txt

@@ -6,4 +6,4 @@ mkdocs-git-revision-date-localized-plugin>=1.3,<1.4
 mkdocs-material[imaging]>=9.5.47,<10
 mkdocs-minify-plugin>=0.8,<0.9
 mkdocstrings[python]>=0.27,<1
-termynal>=0.12.2,<0.13
+termynal>=0.12.2,<0.14