deps: update dependency fantomas to v6.3.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
fantomas (source)	6.3.3 -> 6.3.4

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Release Notes

fsprojects/fantomas (fantomas)

### [`v6.3.4`](https://togithub.com/fsprojects/fantomas/blob/HEAD/CHANGELOG.md#634---2024-04-16) ##### Fixed - Regression: An empty line or comment at the end of a list breaks Stroustrup formatting. [#​3079](https://togithub.com/fsprojects/fantomas/issues/3079)

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