deps: update dependency fantomas to 6.3.12

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
fantomas (source)	6.3.11 -> 6.3.12

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Release Notes

fsprojects/fantomas (fantomas)

### [`v6.3.12`](https://redirect.github.com/fsprojects/fantomas/blob/HEAD/CHANGELOG.md#6312---2024-09-05) ##### Fixed - Fantomas deletes attributes from getters. [#​3114](https://redirect.github.com/fsprojects/fantomas/issues/3114)

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