Bump traitlets from 4.3.3 to 5.14.3

Bumps [traitlets](https://github.com/ipython/traitlets) from 4.3.3 to 5.14.3.
- [Release notes](https://github.com/ipython/traitlets/releases)
- [Changelog](https://github.com/ipython/traitlets/blob/main/CHANGELOG.md)
- [Commits](ipython/traitlets@4.3.3...v5.14.3)

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

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

Otherfiles/doc-requirements.txt

@@ -1,7 +1,7 @@
 art==6.2
 notebook==5.7.4
 nbformat==5.0.8
-traitlets==4.3.3
+traitlets==5.14.3
 nbconvert==5.6.1
 jupyter_contrib_nbextensions==0.5.1
 MarkupSafe==2.0.1