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

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

charts/stable/nullserv/Chart.yaml

@@ -3,7 +3,7 @@ appVersion: "1.3.0"
 dependencies:
 - name: common
   repository: https://truecharts.org
-  version: 8.14.5
+  version: 8.15.0
 description: A simple null file http and https server
 home: https://github.com/truechartsapps/tree/master/charts/stable/nullserv
 icon: https://truecharts.org/_static/img/appicons/nullserv-icon.png
@@ -17,7 +17,7 @@ maintainers:
 name: nullserv
 sources:
 - https://github.com/bmrzycki/nullserv
-version: 4.0.37
+version: 4.0.38
 annotations:
   truecharts.org/catagories: |
     - media