chore(deps): update dependency prometheus to v2.55.1

[grafanarenovatebot[bot]]

This PR contains the following updates:

Package	Update	Change
prometheus	patch	v2.55.0 -> v2.55.1

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Release Notes

prometheus/prometheus (prometheus)

### [`v2.55.1`](https://togithub.com/prometheus/prometheus/releases/tag/v2.55.1): 2.55.1 / 2024-01-04 [Compare Source](https://togithub.com/prometheus/prometheus/compare/v2.55.0...v2.55.1) - \[BUGFIX] `round()` function did not remove `__name__` label. [#​15250](https://togithub.com/prometheus/prometheus/issues/15250)

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