Merge pull request #39490 from deads2k/generic-16-bump-gengo

Automatic merge from submit-queue (batch tested with PRs 39466, 39490, 39527)

bump gengo to latest

bumping gengo to limit surprises while working on https://github.com/kubernetes/kubernetes/pull/39475

@kubernetes/sig-api-machinery-misc

cmd/libs/go2idl/openapi-gen/generators/openapi_test.go

@@ -33,7 +33,7 @@ import (
 func construct(t *testing.T, files map[string]string, testNamer namer.Namer) (*parser.Builder, types.Universe, []*types.Type) {
 	b := parser.New()
 	for name, src := range files {
-		if err := b.AddFile(filepath.Dir(name), name, []byte(src)); err != nil {
+		if err := b.AddFileForTest(filepath.Dir(name), name, []byte(src)); err != nil {
 			t.Fatal(err)
 		}
 	}