Bump cli versions (#21)

* chore(deps): bump kubectl version to 1.19.6

* chore(deps): bump aws-iam-authenticator version to 1.21.2

* chore(deps): lock aws-cli version to 1.20.8

* chore(deps): use linux version of the kubectl

Dockerfile

@@ -1,13 +1,13 @@
 FROM alpine:3.13
 
-ARG KUBECTL_VERSION="1.17.7"
+ARG KUBECTL_VERSION="1.19.6"
 
 RUN apk add py-pip curl wget ca-certificates git bash jq gcc alpine-sdk
-RUN pip install awscli
-RUN curl -L -o /usr/bin/kubectl https://amazon-eks.s3.us-west-2.amazonaws.com/1.17.7/2020-07-08/bin/linux/amd64/kubectl
+RUN pip install 'awscli==1.20.8'
+RUN curl -L -o /usr/bin/kubectl https://amazon-eks.s3.us-west-2.amazonaws.com/1.19.6/2021-01-05/bin/linux/amd64/kubectl
 RUN chmod +x /usr/bin/kubectl
 
-RUN curl -o /usr/bin/aws-iam-authenticator https://amazon-eks.s3.us-west-2.amazonaws.com/1.17.7/2020-07-08/bin/linux/amd64/aws-iam-authenticator
+RUN curl -o /usr/bin/aws-iam-authenticator https://amazon-eks.s3-us-west-2.amazonaws.com/1.21.2/2021-07-05/bin/linux/amd64/aws-iam-authenticator
 RUN chmod +x /usr/bin/aws-iam-authenticator
 
 RUN wget https://get.helm.sh/helm-v3.6.2-linux-amd64.tar.gz -O - | tar -xzO linux-amd64/helm > /usr/local/bin/helm