Update Helm release mariadb to v20.4.3

This MR contains the following updates:

Package	Update	Change
mariadb (source)	patch	20.4.2 -> 20.4.3

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Release Notes

bitnami/charts (mariadb)

v20.4.3

• [bitnami/mariadb] Release 20.4.3 (#​33085)

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Configuration

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This MR has been generated by Renovate Bot.

mentioned in issue #6

merged

mentioned in commit d295f068