Update minimal version to go 1.16

[ncatelli]

General

This PR bumps the minimum version of go to 1.16 in both go mod and the build jobs to resolve an issue where some of our mac users are impacted by golang/go#49219.

Testing

Prior to these changes:

$> go version
go version go1.18.2 darwin/amd64
$> CGO_ENABLED=0 go build -o bin/ssm main.go
# [golang.org/x/sys/unix](http://golang.org/x/sys/unix)
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20200625212154-ddb9806d33ae/unix/syscall_darwin.1_13.go:29:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20200625212154-ddb9806d33ae/unix/zsyscall_darwin_amd64.1_13.go:27:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20200625212154-ddb9806d33ae/unix/zsyscall_darwin_amd64.1_13.go:40:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20200625212154-ddb9806d33ae/unix/zsyscall_darwin_amd64.go:28:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20200625212154-ddb9806d33ae/unix/zsyscall_darwin_amd64.go:43:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20200625212154-ddb9806d33ae/unix/zsyscall_darwin_amd64.go:59:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20200625212154-ddb9806d33ae/unix/zsyscall_darwin_amd64.go:75:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20200625212154-ddb9806d33ae/unix/zsyscall_darwin_amd64.go:90:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20200625212154-ddb9806d33ae/unix/zsyscall_darwin_amd64.go:105:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20200625212154-ddb9806d33ae/unix/zsyscall_darwin_amd64.go:121:3: //go:linkname must refer to declared function or variable
../../../go/pkg/mod/golang.org/x/sys@v0.0.0-20200625212154-ddb9806d33ae/unix/zsyscall_darwin_amd64.go:121:3: too many errors

After dep update, builds pass:

$> CGO_ENABLED=0 go build -o bin/ssm main.go
go: downloading [github.com/AlecAivazis/survey/v2](http://github.com/AlecAivazis/survey/v2) v2.3.4
go: downloading [github.com/aws/aws-sdk-go](http://github.com/aws/aws-sdk-go) v1.44.19
go: downloading [github.com/sirupsen/logrus](http://github.com/sirupsen/logrus) v1.8.1
go: downloading [github.com/spf13/cobra](http://github.com/spf13/cobra) v1.4.0
go: downloading [golang.org/x/sys](http://golang.org/x/sys) v0.0.0-20220520151302-bc2c85ada10a
go: downloading [github.com/spf13/pflag](http://github.com/spf13/pflag) v1.0.5
go: downloading [golang.org/x/term](http://golang.org/x/term) v0.0.0-20220411215600-e5f449aeb171
go: downloading [github.com/mattn/go-colorable](http://github.com/mattn/go-colorable) v0.1.12
go: downloading [github.com/mattn/go-isatty](http://github.com/mattn/go-isatty) v0.0.14
go: downloading [github.com/jmespath/go-jmespath](http://github.com/jmespath/go-jmespath) v0.4.0

Issues

relates to #63
caused by golang/go#49219

Other changes

• Update the devcontainer to 1.17-bullseye.

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