chore(deps): update github actions

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	digest	b4ffde6 -> a5ac7e5
canonical/charming-actions	action	minor	2.3.0 -> 2.4.0

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Release Notes

canonical/charming-actions (canonical/charming-actions)

### [`v2.4.0`](https://togithub.com/canonical/charming-actions/releases/tag/2.4.0) [Compare Source](https://togithub.com/canonical/charming-actions/compare/2.3.0...2.4.0) ##### What's Changed - update to node16 for deprecation warnings by [@​lucabello](https://togithub.com/lucabello) in [https://github.com/canonical/charming-actions/pull/95](https://togithub.com/canonical/charming-actions/pull/95) - Add pull image option by [@​kian99](https://togithub.com/kian99) in [https://github.com/canonical/charming-actions/pull/102](https://togithub.com/canonical/charming-actions/pull/102) ##### New Contributors - [@​lucabello](https://togithub.com/lucabello) made their first contribution in [https://github.com/canonical/charming-actions/pull/95](https://togithub.com/canonical/charming-actions/pull/95) - [@​kian99](https://togithub.com/kian99) made their first contribution in [https://github.com/canonical/charming-actions/pull/102](https://togithub.com/canonical/charming-actions/pull/102) **Full Changelog**: https://github.com/canonical/charming-actions/compare/2.3.0...2.4.0

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