Update actions/cache action to v4

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
actions/cache	action	major	v3.3.3 -> v4.0.0

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Release Notes

actions/cache (actions/cache)

### [`v4.0.0`](https://togithub.com/actions/cache/releases/tag/v4.0.0) [Compare Source](https://togithub.com/actions/cache/compare/v3.3.3...v4.0.0) ##### What's Changed - Update action to node20 by [@​takost](https://togithub.com/takost) in [https://github.com/actions/cache/pull/1284](https://togithub.com/actions/cache/pull/1284) - feat: save-always flag by [@​to-s](https://togithub.com/to-s) in [https://github.com/actions/cache/pull/1242](https://togithub.com/actions/cache/pull/1242) ##### New Contributors - [@​takost](https://togithub.com/takost) made their first contribution in [https://github.com/actions/cache/pull/1284](https://togithub.com/actions/cache/pull/1284) - [@​to-s](https://togithub.com/to-s) made their first contribution in [https://github.com/actions/cache/pull/1242](https://togithub.com/actions/cache/pull/1242) **Full Changelog**: https://github.com/actions/cache/compare/v3...v4.0.0

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