fix(charts): update helm release thanos to v15.7.5

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
thanos (source)	patch	15.7.4 -> 15.7.5

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Release Notes

bitnami/charts (thanos)

### [`v15.7.5`](https://togithub.com/bitnami/charts/blob/HEAD/bitnami/thanos/CHANGELOG.md#1575-2024-06-11) - \[bitnami/thanos] only deploy networkPolicy when component is enabled ([#​27070](https://togithub.com/bitnami/charts/pull/27070))

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