sphinx-needs 6.1.0 is incompatible with python 3.14

[PhilipPartsch]

it looks like Sphinx-Needs 6.1.0 is incompatible with Python 3.14:
build with python 3.13.7 is working

build with python 3.14.0 is not working

[ubmarco]

Good hint. We would need a PR on Sphinx-Needs side to let our CI evaluate this.

[PhilipPartsch]

I created a PR which shows the error: #1567