.github/workflows: update helm and kustomize env

Author: mohamedawnallah

.github/workflows/installation-chart.yaml

@@ -1,8 +1,8 @@
 # validate any chart changes under charts directory
 name: Chart
 env:
-  HELM_VERSION: v3.11.2
-  KUSTOMIZE_VERSION: 5.4.3
+  HELM_VERSION: v3.17.3
+  KUSTOMIZE_VERSION: 5.6.0
 on:
   push:
     # Exclude branches created by Dependabot to avoid triggering current workflow
@@ -41,7 +41,7 @@ jobs:
       - name: Set up Helm
         uses: azure/setup-helm@v4
         with:
-          version: v3.17.3
+          version: ${{ env.HELM_VERSION }}
 
       - name: Set up Kustomize
         uses: syntaqx/setup-kustomize@v1