maint: bump nbconvert from 7.13.0 to 7.16.1

Bumps [nbconvert](https://github.com/jupyter/nbconvert) from 7.13.0 to 7.16.1.
- [Release notes](https://github.com/jupyter/nbconvert/releases)
- [Changelog](https://github.com/jupyter/nbconvert/blob/main/CHANGELOG.md)
- [Commits](jupyter/nbconvert@v7.13.0...v7.16.1)

---
updated-dependencies:
- dependency-name: nbconvert
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pyproject.toml

@@ -42,7 +42,7 @@ doc = [
     "myst-parser==2.0.0",
     "nbsphinx==0.9.3",
     "numpydoc==1.5.0",
-    "nbconvert==7.13.0",
+    "nbconvert==7.16.1",
     "sphinx==7.2.6",
     "sphinx-design==0.5.0",
     "sphinx-jinja==2.0.2",