chore(deps): update helm release nginx to v15.5.0

Author: renovate[bot]

examples/multiple-helm-charts/charts/chart1/Chart.yaml

@@ -3,5 +3,5 @@ version: 1.0.0
 name: nginx
 dependencies:
 - name: nginx
-  version: 15.4.5
+  version: 15.5.0
   repository: https://charts.bitnami.com/bitnami