chore(deps): update metabase/metabase docker tag to v0.55.8

Author: renovate[bot]

charts/metabase/values.yaml

@@ -5,7 +5,7 @@ service:
     repository: "metabase/metabase"
     pullPolicy: IfNotPresent
     # Overrides the image tag whose default is the chart appVersion.
-    tag: "v0.50.15"
+    tag: "v0.55.8"
 
 global:
   postgresql: