Check if GH actions need updated

[dboreham]

Warning on the job log says that these actions may be out dated:

actions/checkout@v4
astral-sh/setup-uv@v4

[dboreham]

The last PR #63 only changed one of the three actions in this project. The other two still need updating.

[dboreham]

This is resolved. There are no longer Node.JS version warnings on the CI jobs.