cp instead of set at actions level

Author: tylertitsworth

.github/workflows/chart-ci.yaml

@@ -43,7 +43,7 @@ jobs:
       - name: Helm Lint, Install, and Test
         if: steps.changed.outputs.changed == 'true'
         run: |
-          echo "${{ secrets.KUBECTL_PATH }}" >> $GITHUB_PATH
+          cp {{ secrets.KUBECTL_PATH }}/kubectl /usr/local/bin/kubectl
           kubectl config use-context kubeflow
           ct lint-and-install --target-branch ${{ github.event.repository.default_branch }} --config .github/ct.yaml --debug --namespace helm-ci
         env: