ci: opt into Node.js 24 for GitHub Actions runners

Suppresses Node.js 20 deprecation warnings ahead of the June 2026
forced migration.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: obezpalko

.github/workflows/docker.yml

@@ -9,6 +9,7 @@ on:
 
 env:
   IMAGE: ghcr.io/${{ github.repository }}
+  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
 
 jobs:
   # ── Build each platform on its native runner in parallel ─────────────────

.github/workflows/helm.yml

@@ -9,6 +9,9 @@ on:
       - '.github/workflows/helm.yml'
   workflow_dispatch:
 
+env:
+  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
+
 jobs:
   oci:
     name: Publish to GHCR (OCI)