Merge pull request #180 from smallstep/max/bump-kubectl-version

Bump kubectl version in step-ca-bootsrap

Author: dopey

docker/step-ca-bootstrap/Dockerfile

@@ -6,7 +6,7 @@ ENV CA_ADDRESS=":9000"
 ENV CA_DEFAULT_PROVISIONER="admin"
 ENV CA_URL="https://127.0.0.1:9000"
 
-ENV KUBE_LATEST_VERSION="v1.25.3"
+ENV KUBE_LATEST_VERSION="v1.30.0"
 
 USER root
 RUN apk --update add expect && \