py-nbconvert: add missing dependency to py-jupyterlab_pygments

[someuser12]

Description

Add missing dependency of py-nbconvert to py-jupyterlab_pygments (file /opt/local/Library/Frameworks/Python.framework/Versions/3.12/lib/python3.12/site-packages/nbconvert/preprocessors/csshtmlheader.py from py-nbconvert contains from jupyterlab_pygments import JupyterStyle).

Type(s)

• bugfix
• enhancement
• security fix

Tested on

macOS 15.2 24C101 arm64
Xcode 16.2 16C5032a

Verification

Have you

• followed our Commit Message Guidelines?
• squashed and minimized your commits?
• checked that there aren't other open pull requests for the same change?
• referenced existing tickets on Trac with full URL in commit message?
• checked your Portfile with port lint?
• tried existing tests with sudo port test?
• tried a full install with sudo port -vst install?
• tested basic functionality of all binary files?
• checked that the Portfile's most important variants haven't been broken?

[macportsbot]

Notifying maintainers:
@stromnov for port py-nbconvert.