vendor: update all dependencies to latest versions

vendor/google.golang.org/api/google-api-go-generator/internal/disco/disco.go

@@ -62,6 +62,19 @@ func (d *Document) init() error {
 // NewDocument unmarshals the bytes into a Document.
 // It also validates the document to make sure it is error-free.
 func NewDocument(bytes []byte) (*Document, error) {
+	// The discovery service returns JSON with this format if there's an error, e.g.
+	// the document isn't found.
+	var errDoc struct {
+		Error struct {
+			Code    int
+			Message string
+			Status  string
+		}
+	}
+	if err := json.Unmarshal(bytes, &errDoc); err == nil && errDoc.Error.Code != 0 {
+		return nil, fmt.Errorf("bad discovery doc: %+v", errDoc.Error)
+	}
+
 	var doc Document
 	if err := json.Unmarshal(bytes, &doc); err != nil {
 		return nil, err

vendor/google.golang.org/api/google-api-go-generator/internal/disco/disco_test.go

@@ -7,6 +7,7 @@ package disco
 import (
 	"io/ioutil"
 	"reflect"
+	"strings"
 	"testing"
 )
 
@@ -262,3 +263,15 @@ func TestSchemaErrors(t *testing.T) {
 		}
 	}
 }
+
+func TestErrorDoc(t *testing.T) {
+	bytes, err := ioutil.ReadFile("testdata/error.json")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if _, err := NewDocument(bytes); err == nil {
+		t.Error("got nil, want error")
+	} else if !strings.Contains(err.Error(), "404") {
+		t.Errorf("got %v, want 404", err)
+	}
+}

vendor/google.golang.org/api/google-api-go-generator/internal/disco/testdata/error.json

@@ -0,0 +1,7 @@
+{
+  "error": {
+    "code": 404,
+    "message": "Discovery document not found for API service: container.googleapis.com format: rest version: v1alpha1",
+    "status": "NOT_FOUND"
+  }
+}