Update Helm release mariadb to v18.2.6

This PR contains the following updates:

Package	Update	Change
mariadb (source)	patch	`18.2.5` -> `18.2.6`

Release Notes

bitnami/charts (mariadb)

### [`v18.2.6`](https://togithub.com/bitnami/charts/blob/HEAD/bitnami/mariadb/CHANGELOG.md#1826-2024-07-02) - \[bitnami/mariadb] Release 18.2.6 ([#27638](https://togithub.com/bitnami/charts/pull/27638))

Configuration

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McMumf / Homelab

Update Helm release mariadb to v18.2.6 #115

Release Notes

Configuration

Quality Gate passed