Merge pull request kubernetes#92362 from brianpursley/kubernetes-90739

Add bazel_skylib_workspace to fix make bazel-test 'no matching toolchains found' error

Author: k8s-ci-robot

build/root/WORKSPACE

@@ -56,3 +56,7 @@ release_dependencies()
 load("//build:workspace_mirror.bzl", "export_urls")
 
 export_urls("workspace_urls")
+
+load("@bazel_skylib//:workspace.bzl", "bazel_skylib_workspace")
+
+bazel_skylib_workspace()