Bump Go version in build image to 1.16

[PrasadG193]

Change Overview

Bump Go version in build image to 1,16

Pull request type

Please check the type of change your PR introduces:

• 🚧 Work in Progress
• 🌈 Refactoring (no functional changes, no api changes)
• 🐹 Trivial/Minor
• 🐛 Bugfix
• 🌻 Feature
• 🗺️ Documentation
• 🤖 Test

Issues

• #XXX

Test Plan

• 💪 Manual
• ⚡ Unit test
• 💚 E2E

$ docker build -t prasag193/kanister-build ./docker/build/            
Sending build context to Docker daemon   2.56kB                                                                                                                                                                    
Step 1/10 : FROM alpine:3.10.5                                                                                                                                                                                     
3.10.5: Pulling from library/alpine            
Digest: sha256:f0e9534a598e501320957059cb2a23774b4d4072e37c7b2cf7e95b241f019e35                                                                                                                                    
Status: Downloaded newer image for alpine:3.10.5                                                                                                                                                                   
 ---> be4e4bea2c2e                                      
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Removing intermediate container c190d9030f4c
 ---> 4ffd801dafce
Step 10/10 : ENV CGO_ENABLED=0     GO111MODULE="on"     GOROOT="/usr/local/go"     GOCACHE=/go/.cache/go-build     GO_EXTLINK_ENABLED=0     PATH="/usr/local/go/bin:${PATH}"
 ---> Running in b36ff5460566
Removing intermediate container b36ff5460566
 ---> 61657003f1c0
Successfully built 61657003f1c0
Successfully tagged prasag193/kanister-build:latest

[pavannd1]

Not a blocker. We should run make codegen once