Support of Helm 4

Externalized helm path and added proper support for insecure registries, probably handling changed in helm 4

Author: kiemlicz

.github/workflows/release.yml

@@ -13,13 +13,14 @@ jobs:
   release: # fixme wait for test-release it goes in parallel: https://github.com/kiemlicz/shelm/actions/runs/8270700884
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v6
       with:
         fetch-depth: 0
     - name: Set up JDK
-      uses: actions/setup-java@v1
+      uses: actions/setup-java@v5
       with:
-        java-version: 17
+        java-version: 21
+        distribution: 'temurin'
     - name: Setup sbt launcher
       uses: sbt/setup-sbt@v1
     - name: Release