chore(deps): update cachix/cachix-action action to v15 (main)

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
cachix/cachix-action	action	major	v14 -> v15

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Release Notes

cachix/cachix-action (cachix/cachix-action)

### [`v15`](https://togithub.com/cachix/cachix-action/releases/tag/v15): cachix-action-v15 [Compare Source](https://togithub.com/cachix/cachix-action/compare/v14...v15) #### What's Changed - Pass `cachixArgs` to the daemon by [@​sandydoo](https://togithub.com/sandydoo) in [https://github.com/cachix/cachix-action/pull/177](https://togithub.com/cachix/cachix-action/pull/177) - Support path filtering when using the daemon by [@​sandydoo](https://togithub.com/sandydoo) in [https://github.com/cachix/cachix-action/pull/182](https://togithub.com/cachix/cachix-action/pull/182) - Skip prep steps if using `pathsToPush` by [@​sandydoo](https://togithub.com/sandydoo) in [https://github.com/cachix/cachix-action/pull/180](https://togithub.com/cachix/cachix-action/pull/180) - store-scan: improve error handling when listing the store fails by [@​sandydoo](https://togithub.com/sandydoo) in [https://github.com/cachix/cachix-action/pull/183](https://togithub.com/cachix/cachix-action/pull/183) **Full Changelog**: https://github.com/cachix/cachix-action/compare/v14...v15

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Configuration

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