fix action

Author: dbadura

.github/workflows/pull-kyma-integration-tests.yml

@@ -40,7 +40,7 @@ jobs:
           ./.github/scripts/deploy_busola.sh PR-${{ github.event.number }} | tee busola-deploy.log
       - name: prepare_kubeconfig
         run: |
-          prepare_kubeconfig.sh
+          ./.github/scripts/prepare_kubeconfig.sh
       - name: run_tests
         shell: bash
         run: |