chore(deps): update dependency pointfreeco/swift-snapshot-testing to from: "1.15.4"

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
pointfreeco/swift-snapshot-testing	patch	from: "1.15.3" -> from: "1.15.4"

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Release Notes

pointfreeco/swift-snapshot-testing (pointfreeco/swift-snapshot-testing)

### [`v1.15.4`](https://togithub.com/pointfreeco/swift-snapshot-testing/releases/tag/1.15.4) [Compare Source](https://togithub.com/pointfreeco/swift-snapshot-testing/compare/1.15.3...1.15.4) #### What's Changed - Fixed: Bump swift-syntax requirements to support 5.10.0 ([https://github.com/pointfreeco/swift-snapshot-testing/pull/836](https://togithub.com/pointfreeco/swift-snapshot-testing/pull/836)). **Full Changelog**: https://github.com/pointfreeco/swift-snapshot-testing/compare/1.15.3...1.15.4

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