tests: update docker versions to match build version (#7646)

DOCKER/Dockerfile

@@ -1,5 +1,5 @@
 # stage 1 Generate Tendermint Binary
-FROM golang:1.16-alpine as builder
+FROM golang:1.17-alpine as builder
 RUN apk update && \
     apk upgrade && \
     apk --no-cache add make
@@ -8,7 +8,7 @@ WORKDIR /tendermint
 RUN make build-linux
 
 # stage 2
-FROM golang:1.15-alpine
+FROM golang:1.17-alpine
 LABEL maintainer="hello@tendermint.com"
 
 # Tendermint will be looking for the genesis file in /tendermint/config/genesis.json

test/docker/Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.16
+FROM golang:1.17
 
 # Grab deps (jq, hexdump, xxd, killall)
 RUN apt-get update && \