chore: update helm to v3.19.4 for chart linting (#457)

* update helm to v3.19.4

* fix PR ref

* trigger ci

Author: jamescripter

.github/workflows/ci.yaml

@@ -59,7 +59,7 @@ jobs:
 
       - uses: azure/setup-helm@v4
         with:
-          version: v3.10.0
+          version: v3.19.4
 
       - uses: actions/setup-python@v6
         with:

CHANGELOG.md

@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### dependency
+- Updated helm to v3.19.4 for chart linting @jamescripter [#457](https://github.com/newrelic/newrelic-k8s-metrics-adapter/pull/457)
+
 ## v0.19.6 - 2025-12-29
 
 ### ⛓️ Dependencies