test: rm cache clear. Try latest version of ct test

Signed-off-by: Tim Collins <tim@thecollins.team>

.github/workflows/lint-and-test.yml

@@ -41,7 +41,7 @@ jobs:
         uses: helm/chart-testing-action@e6669bcd63d7cb57cb4380c33043eebe5d111992 # v2.6.1
         with:
           # Note: Also update in scripts/lint.sh
-          version: v3.10.0
+          version: v3.11.0
 
       - name: List changed charts
         id: list-changed
@@ -74,15 +74,6 @@ jobs:
         if: steps.list-changed.outputs.changed == 'true'
         with:
           config: .github/configs/kind-config.yaml
-      - name: Remove old cache
-        if: steps.list-changed.outputs.changed == 'true'
-        run: |
-          releases=$(helm list --all-namespaces -q)
-          for release in $releases; do
-            namespace=$(helm list --all-namespaces -q | grep "^$release" | awk '{print $2}')
-            echo "Uninstalling release $release in namespace $namespace"
-            helm uninstall $release -n $namespace
-          done
       - name: Deploy latest ArgoCD CRDs when testing ArgoCD extensions
         if: |
           contains(steps.list-changed.outputs.changed_charts, 'argocd-image-updater') ||