Update Plone test versions, and pin twine

[davisagli]

There was a new release of twine today which requires packaging 24.0, which is not in our KGS. /cc @mauritsvanrees

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📚 Documentation preview 📚: https://plonerestapi--1865.org.readthedocs.build/

[mister-roboto]

@davisagli thanks for creating this Pull Request and helping to improve Plone!

TL;DR: Finish pushing changes, pass all other checks, then paste a comment:

@jenkins-plone-org please run jobs

To ensure that these changes do not break other parts of Plone, the Plone test suite matrix needs to pass, but it takes 30-60 min. Other CI checks are usually much faster and the Plone Jenkins resources are limited, so when done pushing changes and all other checks pass either start all Jenkins PR jobs yourself, or simply add the comment above in this PR to start all the jobs automatically.

Happy hacking!

[mauritsvanrees]

There was a new release of twine today which requires packaging 24.0, which is not in our KGS. /cc @mauritsvanrees

Plone 6.0.13 had packaging 23.2, but in Plone 6.0.14 and 6.1.0b2 we pin packaging 24.2, so that should be fine.

Also, in 6.0 the twine pin is versions-extra.cfg, so we could also include that one.