Fix PKG_VERSION fix in publish_pypi.yml

[will-moore]

This aims to fix the error at https://github.com/ome/omero-figure/actions/runs/24660519372/job/72105014376

Running locally, this works:

$ PKG_VERSION=$(python -c "import omero_figure.utils as u; print(u.__version__)")
$ echo $PKG_VERSION 
8.0.1.rc0

[will-moore]

cc @jburel - seems I trusted the github copilot code here a bit too much.
I think the commit above should fix the syntax error. But I'm also thinking that maybe we don't need that whole build step to compare the version number in figure.utils.py with the github tag? If we stick to the correct bumpversion commands that we've tested then we should be good, so I think we could remove this whole - name: Validate tag matches package version step that was added in #682 ?

[jburel]

Apologies I missed that check.
We do not have that anywhere. We could certainly improve it in a follow up strategy.
Please remove

[will-moore]

Done, removed that step from publish_pypi.yml