exec-lifecycle is using an option that will be deprecated soon

[lilyminium]

trafficstars

From https://github.com/openforcefield/qca-dataset-submission/actions/runs/9525481637/job/26259673465?pr=356 --

Warning: The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

[lilyminium]

In general the actions versions could use an update.

[lilyminium]

After looking into these, all warnings come from upstream actions that haven't been updated in a while:

• checkout and cache from action-cached-lfs-checkout
• not sure which action is using set-output, but the linked post in the deprecation warning does say they've postponed without giving a future date.

PRs have been opened to action-cached-lfs-checkout already upgrading those actions, so maybe we can see if those get merged or fork it ourselves if not. Actions are being transitioned to run on Node20 sometime this year (perhaps already?) github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20

softprops/turnstyle has fixes upgrading to Node20 but hasn't made a tagged release since 2020; maybe we should be pointing to main there.