Update Helm release mariadb to v20.5.5

This MR contains the following updates:

Package	Update	Change
mariadb (source)	patch	20.5.3 -> 20.5.5

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Release Notes

bitnami/charts (mariadb)

v20.5.5

• [bitnami/mariadb] ⚡ ⬆️ Update dependency references (#​33554)

v20.5.4

• [bitnami/mariadb] chore: ♻️ ⬆️ Update common and remove k8s < 1.23 references (#​33393 (a6d3726), closes #​33393

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