Update vendor for next release (#1343)

vendor/github.com/google/gops/agent/sockopt_unsupported.go

@@ -0,0 +1,13 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build js,wasm plan9 windows
+
+package agent
+
+import "syscall"
+
+func setsockoptReuseAddrAndPort(network, address string, c syscall.RawConn) error {
+	return nil
+}