feat: add kubeval installation step for Helm chart validation

Author: NatSquared

.github/workflows/infrastructure-ci-cd.yml

@@ -170,7 +170,11 @@ jobs:
             helm lint .
             helm template . --dry-run > /dev/null
           fi
-
+      - name: Install kubeval
+        run: |
+          KUBEVAL_VERSION="v0.16.1"
+          wget https://github.com/instrumenta/kubeval/releases/download/${KUBEVAL_VERSION}/kubeval-linux-amd64.tar.gz -O /usr/local/bin/kubeval
+          chmod +x /usr/local/bin/kubeval
       - name: Validate with kubeval
         working-directory: "${{ matrix.chart.dir }}"
         run: |