Update dependencies

vendor/cloud.google.com/go/logging/logadmin/logadmin.go

@@ -46,7 +46,9 @@ import (
 	logtypepb "google.golang.org/genproto/googleapis/logging/type"
 	logpb "google.golang.org/genproto/googleapis/logging/v2"
 	"google.golang.org/grpc/codes"
+
 	// Import the following so EntryIterator can unmarshal log protos.
+	_ "google.golang.org/genproto/googleapis/appengine/logging/v1"
 	_ "google.golang.org/genproto/googleapis/cloud/audit"
 )
 

vendor/cloud.google.com/go/logging/logadmin/sinks.go

@@ -87,8 +87,7 @@ func (c *Client) Sink(ctx context.Context, sinkID string) (*Sink, error) {
 	return fromLogSink(ls), nil
 }
 
-// UpdateSink updates an existing Sink, or creates a new one if the Sink doesn't exist.
-// Requires AdminScope.
+// UpdateSink updates an existing Sink. Requires AdminScope.
 func (c *Client) UpdateSink(ctx context.Context, sink *Sink) (*Sink, error) {
 	ls, err := c.sClient.UpdateSink(ctx, &logpb.UpdateSinkRequest{
 		SinkName: c.sinkPath(sink.ID),

vendor/cloud.google.com/go/logging/logadmin/sinks_test.go

@@ -152,7 +152,9 @@ func TestUpdateSink(t *testing.T) {
 		Filter:      testFilter,
 	}
 
-	// Updating a non-existent sink creates a new one.
+	if _, err := client.CreateSink(ctx, sink); err != nil {
+		t.Fatal(err)
+	}
 	got, err := client.UpdateSink(ctx, sink)
 	if err != nil {
 		t.Fatal(err)