Update Helm release mariadb to v19

This MR contains the following updates:

Package	Update	Change
mariadb (source)	major	18.2.6 -> 19.0.0

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Release Notes

bitnami/charts (mariadb)

v19.0.0

• [bitnami/mariadb] Release 19.0.0 (#​27901)

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Configuration

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