deps: github.com/hashicorp/terraform-exec@v0.16.0 (#112)

Prevents downstream errors about `cannot find module providing package github.com/hashicorp/terraform-exec/tfinstall`.

go.mod

@@ -3,8 +3,10 @@ module github.com/hashicorp/terraform-plugin-docs
 go 1.17
 
 require (
-	github.com/google/go-cmp v0.5.6
-	github.com/hashicorp/terraform-exec v0.15.0
+	github.com/google/go-cmp v0.5.7
+	github.com/hashicorp/go-version v1.4.0
+	github.com/hashicorp/hc-install v0.3.1
+	github.com/hashicorp/terraform-exec v0.16.0
 	github.com/hashicorp/terraform-json v0.13.0
 	github.com/mattn/go-colorable v0.1.12
 	github.com/mitchellh/cli v1.1.2
@@ -13,46 +15,23 @@ require (
 )
 
 require (
-	cloud.google.com/go v0.45.1 // indirect
 	github.com/Masterminds/goutils v1.1.0 // indirect
 	github.com/Masterminds/semver v1.5.0 // indirect
 	github.com/Masterminds/sprig v2.22.0+incompatible // indirect
 	github.com/armon/go-radix v0.0.0-20180808171621-7fddfc383310 // indirect
-	github.com/aws/aws-sdk-go v1.15.78 // indirect
-	github.com/bgentry/go-netrc v0.0.0-20140422174119-9fd32a8b3d3d // indirect
 	github.com/bgentry/speakeasy v0.1.0 // indirect
 	github.com/fatih/color v1.7.0 // indirect
-	github.com/golang/protobuf v1.3.4 // indirect
 	github.com/google/uuid v1.1.2 // indirect
-	github.com/googleapis/gax-go/v2 v2.0.5 // indirect
 	github.com/hashicorp/errwrap v1.0.0 // indirect
-	github.com/hashicorp/go-checkpoint v0.5.0 // indirect
 	github.com/hashicorp/go-cleanhttp v0.5.2 // indirect
-	github.com/hashicorp/go-getter v1.5.3 // indirect
-	github.com/hashicorp/go-multierror v1.0.0 // indirect
-	github.com/hashicorp/go-safetemp v1.0.0 // indirect
-	github.com/hashicorp/go-uuid v1.0.0 // indirect
-	github.com/hashicorp/go-version v1.3.0 // indirect
-	github.com/hashicorp/golang-lru v0.5.1 // indirect
+	github.com/hashicorp/go-multierror v1.1.1 // indirect
 	github.com/huandu/xstrings v1.3.2 // indirect
 	github.com/imdario/mergo v0.3.12 // indirect
-	github.com/jmespath/go-jmespath v0.0.0-20160202185014-0b12d6b521d8 // indirect
-	github.com/klauspost/compress v1.11.2 // indirect
 	github.com/mattn/go-isatty v0.0.14 // indirect
 	github.com/mitchellh/copystructure v1.2.0 // indirect
-	github.com/mitchellh/go-homedir v1.1.0 // indirect
-	github.com/mitchellh/go-testing-interface v1.0.0 // indirect
 	github.com/mitchellh/reflectwalk v1.0.2 // indirect
 	github.com/posener/complete v1.1.1 // indirect
-	github.com/ulikunitz/xz v0.5.8 // indirect
-	go.opencensus.io v0.22.0 // indirect
-	golang.org/x/crypto v0.0.0-20210421170649-83a5a9bb288b // indirect
-	golang.org/x/net v0.0.0-20210326060303-6b1517762897 // indirect
-	golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45 // indirect
+	golang.org/x/crypto v0.0.0-20210616213533-5ff15b29337e // indirect
 	golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6 // indirect
 	golang.org/x/text v0.3.5 // indirect
-	google.golang.org/api v0.9.0 // indirect
-	google.golang.org/appengine v1.6.5 // indirect
-	google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55 // indirect
-	google.golang.org/grpc v1.21.1 // indirect
 )