chore: referencing the setup-kind script in the plumbing repo instead of copying it

Signed-off-by: Shubham Bhardwaj <[email protected]>

Author: infernus01

.github/workflows/e2e-matrix.yml

@@ -44,16 +44,16 @@ jobs:
         echo '::group:: install go-junit-report'
         go install github.com/jstemmer/[email protected]
         echo '::endgroup::'
-
         echo '::group:: created required folders'
         mkdir -p "${ARTIFACTS}"
         echo '::endgroup::'
-
         echo "${GOPATH}/bin" >> "$GITHUB_PATH"
 
     - name: Run tests
       run: |
-        ./hack/setup-kind.sh \
+        curl -sSfL https://raw.githubusercontent.com/tektoncd/plumbing/main/tekton/images/kind-e2e/setup-kind.sh -o setup-kind.sh
+        chmod +x setup-kind.sh
+        ./setup-kind.sh \
           --registry-url $(echo ${KO_DOCKER_REPO} | cut -d'/' -f 1) \
           --cluster-suffix c${{ github.run_id }}.local \
           --nodes 3 \