Update postgresql Docker tag to v15.5.38

[small-hack-renovate[bot]]

This PR contains the following updates:

Package	Update	Change
postgresql (source)	patch	15.5.35 -> 15.5.38

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Release Notes

bitnami/charts (postgresql)

### [`v15.5.38`](https://redirect.github.com/bitnami/charts/blob/HEAD/bitnami/postgresql/CHANGELOG.md#small15538-2024-10-01-small) - \[bitnami/postgresql] Release 15.5.38 ([#​29681](https://redirect.github.com/bitnami/charts/issues/29681)) ([105fcbb](https://redirect.github.com/bitnami/charts/commit/105fcbb5c090c6f0b10858cdcc33dfc255c0c7e4)), closes [#​29681](https://redirect.github.com/bitnami/charts/issues/29681) ### [`v15.5.37`](https://redirect.github.com/bitnami/charts/blob/HEAD/bitnami/postgresql/CHANGELOG.md#small15537-2024-09-30-small) - \[bitnami/postgresql] Release 15.5.37 ([#​29660](https://redirect.github.com/bitnami/charts/issues/29660)) ([45cada1](https://redirect.github.com/bitnami/charts/commit/45cada10883f6ac5ad4ecaadf3c0d6aa1d9912bb)), closes [#​29660](https://redirect.github.com/bitnami/charts/issues/29660) ### [`v15.5.36`](https://redirect.github.com/bitnami/charts/blob/HEAD/bitnami/postgresql/CHANGELOG.md#small15536-2024-09-26-small) - \[bitnami/postgresql] Release 15.5.36 ([#​29640](https://redirect.github.com/bitnami/charts/issues/29640)) ([074e377](https://redirect.github.com/bitnami/charts/commit/074e377c582055f6b7039c63d7d37db5f97b770d)), closes [#​29640](https://redirect.github.com/bitnami/charts/issues/29640)

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