Bump terraform-schema (#546)

This brings hashicorp/terraform-schema#56 to add support for
`isRequired` in variable schema.

go.mod

@@ -17,7 +17,7 @@ require (
 	github.com/hashicorp/terraform-exec v0.13.3
 	github.com/hashicorp/terraform-json v0.11.0
 	github.com/hashicorp/terraform-registry-address v0.0.0-20210412075316-9b2996cce896
-	github.com/hashicorp/terraform-schema v0.0.0-20210610083714-03085295bd36
+	github.com/hashicorp/terraform-schema v0.0.0-20210610085118-e42d6aa8c63d
 	github.com/kylelemons/godebug v1.1.0 // indirect
 	github.com/mh-cbon/go-fmt-fail v0.0.0-20160815164508-67765b3fbcb5
 	github.com/mitchellh/cli v1.1.2

go.sum

@@ -203,8 +203,8 @@ github.com/hashicorp/terraform-json v0.11.0 h1:4zDqqW2F3kOysORIaYKFGgWDYIRA3hwqx
 github.com/hashicorp/terraform-json v0.11.0/go.mod h1:pmbq9o4EuL43db5+0ogX10Yofv1nozM+wskr/bGFJpI=
 github.com/hashicorp/terraform-registry-address v0.0.0-20210412075316-9b2996cce896 h1:1FGtlkJw87UsTMg5s8jrekrHmUPUJaMcu6ELiVhQrNw=
 github.com/hashicorp/terraform-registry-address v0.0.0-20210412075316-9b2996cce896/go.mod h1:bzBPnUIkI0RxauU8Dqo+2KrZZ28Cf48s8V6IHt3p4co=
-github.com/hashicorp/terraform-schema v0.0.0-20210610083714-03085295bd36 h1:sqpjt62JAEyiZHns3PR/wZVILmaJEsF2zwkj6rCchfA=
-github.com/hashicorp/terraform-schema v0.0.0-20210610083714-03085295bd36/go.mod h1:6HnR9FvXrFimOgw3U/9Y1w8J02RJj6YWm7WSOFb4iEM=
+github.com/hashicorp/terraform-schema v0.0.0-20210610085118-e42d6aa8c63d h1:1vQ8qwBeZDOqt+UmuZ8D+hRnS3ilLHziV8XXBkzDAW8=
+github.com/hashicorp/terraform-schema v0.0.0-20210610085118-e42d6aa8c63d/go.mod h1:6HnR9FvXrFimOgw3U/9Y1w8J02RJj6YWm7WSOFb4iEM=
 github.com/hashicorp/terraform-svchost v0.0.0-20200729002733-f050f53b9734 h1:HKLsbzeOsfXmKNpr3GiT18XAblV0BjCbzL8KQAMZGa0=
 github.com/hashicorp/terraform-svchost v0.0.0-20200729002733-f050f53b9734/go.mod h1:kNDNcF7sN4DocDLBkQYz73HGKwN1ANB1blq4lIYLYvg=
 github.com/huandu/xstrings v1.3.2 h1:L18LIDzqlW6xN2rEkpdV8+oL/IXWJ1APd+vsdYy4Wdw=

internal/langserver/handlers/complete_test.go

@@ -584,7 +584,7 @@ func TestVarsCompletion_withValidData(t *testing.T) {
 					{
 						"label": "test",
 						"kind": 10,
-						"detail": "string",
+						"detail": "required, string",
 						"insertTextFormat":1,
 						"textEdit": {
 							"range": {"start":{"line":0,"character":0}, "end":{"line":0,"character":0}}, 

internal/langserver/handlers/hover_test.go

@@ -197,7 +197,7 @@ func TestVarsHover_withValidData(t *testing.T) {
 		"textDocument": {
 			"version": 0,
 			"languageId": "terraform",
-			"text": "variable \"test\" {\n type=string\n}\n",
+			"text": "variable \"test\" {\n type=string\n sensitive=true}\n",
 			"uri": "%s/variables.tf"
 		}
 	}`, tmpDir.URI())})
@@ -228,7 +228,7 @@ func TestVarsHover_withValidData(t *testing.T) {
 			"result": {
 				"contents": {
 					"kind": "plaintext",
-					"value": "test string"
+					"value": "test required, sensitive, string"
 				},
 				"range": {
 					"start": { "line":0, "character":0 },