chore(deps): update docker.io/volkerraschek/helm docker tag to v4

.gitea/workflows/release.yaml

@@ -8,7 +8,7 @@ on:
 jobs:
   publish-chart:
     container:
-      image: docker.io/volkerraschek/helm:3.19.2
+      image: docker.io/volkerraschek/helm:4.1.3
     runs-on: ubuntu-latest
     steps:
       - name: Install packages via apk

Chart.yaml

@@ -9,7 +9,7 @@ name: athens-proxy
 description: Athens proxy server for golang
 type: application
 version: "0.1.0"
-appVersion: "v0.17.0"
+appVersion: "v0.16.2"
 icon: https://github.com/gomods/athens/blob/main/docs/static/banner.png?raw=true
 
 keywords: