chore(deps): update helm chart common to v8.15.0 (#1859)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

charts/stable/shiori/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v2
 appVersion: "1.5.0"
-version: 4.0.29
+version: 4.0.30
 kubeVersion: '>=1.16.0-0'
 name: shiori
 description: A simple bookmark manager built with Go
@@ -18,7 +18,7 @@ sources:
 dependencies:
 - name: common
   repository: https://truecharts.org
-  version: 8.14.5
+  version: 8.15.0
 - condition: postgresql.enabled
   name: postgresql
   repository: https://truecharts.org/