Bump nbconvert from 6.5.0 to 6.5.1 in /previewer_jupyter

Bumps [nbconvert](https://github.com/jupyter/nbconvert) from 6.5.0 to 6.5.1.
- [Release notes](https://github.com/jupyter/nbconvert/releases)
- [Changelog](https://github.com/jupyter/nbconvert/blob/main/CHANGELOG.md)
- [Commits](jupyter/nbconvert@6.5...6.5.1)

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

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

previewer_jupyter/pyproject.toml

@@ -12,7 +12,7 @@ classifiers = [
     'Programming Language :: Python :: 3.12',
 ]
 requires-python = '>=3.12.2, <3.13'
-dependencies = ['indico>=3.3', 'nbconvert==6.5.0']
+dependencies = ['indico>=3.3', 'nbconvert==6.5.1']
 
 [project.urls]
 GitHub = 'https://github.com/indico/indico-plugins'