TST: Python 3.13 support

[pllim]

Description

This pull request is to add Python 3.13 job. Probably no need for change log unless we need real code changes here.

After merge: Follow up issue to remove -dev tag from Python version spec for 3.13 when stable is available from Actions runner.

Fix #3186

Change log entry

• Is a change log needed? If yes, is it added to CHANGES.rst? If you want to avoid merge conflicts,
  list the proposed change log here for review and add to CHANGES.rst before merge. If no, maintainer
  should add a no-changelog-entry-needed label.

Checklist for package maintainer(s)

This checklist is meant to remind the package maintainer(s) who will review this pull request of some common things to look for. This list is not exhaustive.

• Are two approvals required? Branch protection rule does not check for the second approval. If a second approval is not necessary, please apply the trivial label.
• Do the proposed changes actually accomplish desired goals? Also manually run the affected example notebooks, if necessary.
• Do the proposed changes follow the STScI Style Guides?
• Are tests added/updated as required? If so, do they follow the STScI Style Guides?
• Are docs added/updated as required? If so, do they follow the STScI Style Guides?
• Did the CI pass? If not, are the failures related?
• Is a milestone set? Set this to bugfix milestone if this is a bug fix and needs to be released ASAP; otherwise, set this to the next major release milestone. Bugfix milestone also needs an accompanying backport label.
• After merge, any internal documentations need updating (e.g., JIRA, Innerspace)? 🐱

[pllim]

Nope. The stack isn't ready.

[pllim]

Looks like bqplot dev cannot build from source in Python 3.13.

On the stable job (where bqplot stable is not giving me a problem), I ran into ipython/ipykernel#1248 (it needs a new release).

[pllim]

ipykernel finally has a pre-prelease but it broke solara (and our RC testing workflow):

• Version check crashes with ValueError: invalid literal for int() with base 10: '0a0' for ipykernel 7.0.0a0 widgetti/solara#827

[pllim]

devdeps breakage still held up by unmerged PR:

• BLD: Use modern jupyter_packaging bqplot/bqplot#1653

[pllim]

devdeps now encounters the next blocker:

• BLD: Use modern jupyter_packaging and jupyterlab glue-viz/bqplot-image-gl#111

stable job is still waiting for new ipykernel release (anything after 2024-07-01).

[pllim]

Situation still the same. Looks like we're in still waters.