Update Helm release mariadb to v19.0.6

This MR contains the following updates:

Package	Update	Change
mariadb (source)	patch	19.0.5 -> 19.0.6

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Release Notes

bitnami/charts (mariadb)

v19.0.6

• [bitnami/mariadb] test: Improve reliability of ginkgo tests (#​29467)

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