chore: update helm to 2.16.6 and kubernetes to 1.16.9

Author: msiegenthaler

Dockerfile

@@ -1,9 +1,9 @@
-FROM linkyard/alpine-helm:2.16.5
+FROM linkyard/alpine-helm:2.16.6
 LABEL maintainer "mario.siegenthaler@linkyard.ch"
 
 RUN apk add --update --upgrade --no-cache jq bash curl git gettext libintl
 
-ENV KUBERNETES_VERSION 1.16.3
+ENV KUBERNETES_VERSION 1.16.9
 RUN curl -L -o /usr/local/bin/kubectl https://storage.googleapis.com/kubernetes-release/release/v${KUBERNETES_VERSION}/bin/linux/amd64/kubectl; \
   chmod +x /usr/local/bin/kubectl