chore(deps): update helm release mariadb to v20

Author: renovate[bot]

charts/authelia/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v2
 name: authelia
-version: 0.10.4
+version: 0.10.5
 kubeVersion: ">= 1.13.0-0"
 description: Authelia is a Single Sign-On Multi-Factor portal for web apps
 type: application
@@ -26,7 +26,7 @@ dependencies:
     repository: https://charts.bitnami.com/bitnami
     condition: configMap.storage.postgres.deploy
   - name: mariadb
-    version: ~18.2.4
+    version: ~20.4.0
     repository: https://charts.bitnami.com/bitnami
     condition: configMap.storage.mysql.deploy
   - name: redis