chore(deps): update helm release mariadb to v20.2.2

This MR contains the following updates:

Package	Update	Change
mariadb (source)	patch	20.2.1 -> 20.2.2

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Release Notes

bitnami/charts (mariadb)

v20.2.2

• [bitnami/mariadb] Release 20.2.2 (#​31535)

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