chore(deps): update helm chart common to v8.3.15 (#1240)

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

charts/stable/babybuddy/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v2
 appVersion: "1.9.0"
 kubeVersion: '>=1.16.0-0'
-version: 4.0.0
+version: 4.0.1
 name: babybuddy
 description: Helps caregivers track sleep, feedings, diaper changes, tummy time and more to learn about and predict baby's needs without (as much) guess work.
 type: application
@@ -19,7 +19,7 @@ sources:
 dependencies:
 - name: common
   repository: https://truecharts.org
-  version: 8.3.14
+  version: 8.3.15
 - condition: postgresql.enabled
   name: postgresql
   repository: https://truecharts.org/