* enable cache for Mac brew and scons
* bump
* save cache by default, explicitly opt-out
* Delete bump-ci
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Co-authored-by: Maxime Desroches <desroches.maxime@gmail.com>
actions/cache@v3 uses the deprecated Node.js 16 so update to
use v4 which uses Node.js 20. This also applies to save and
restore
old-commit-hash: ba2538c29c