Merge pull request kubernetes-sigs#7169 from oscr/update-shellcheck

🌱 Update shellcheck version (0.7.0->0.8.0)

Author: k8s-ci-robot

hack/verify-shellcheck.sh

@@ -17,7 +17,7 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
-VERSION="v0.7.0"
+VERSION="v0.8.0"
 
 OS="unknown"
 if [[ "${OSTYPE}" == "linux"* ]]; then