TUN-8685: Bump coredns dependency

Closes TUN-8685

vendor/github.com/gobwas/ws/doc.go

@@ -11,70 +11,70 @@ Upgrade to WebSocket (or WebSocket handshake) can be done in two ways.
 
 The first way is to use `net/http` server:
 
-  http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
-	  conn, _, _, err := ws.UpgradeHTTP(r, w)
-  })
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		conn, _, _, err := ws.UpgradeHTTP(r, w)
+	})
 
 The second and much more efficient way is so-called "zero-copy upgrade". It
 avoids redundant allocations and copying of not used headers or other request
 data. User decides by himself which data should be copied.
 
-  ln, err := net.Listen("tcp", ":8080")
-  if err != nil {
-	  // handle error
-  }
+	ln, err := net.Listen("tcp", ":8080")
+	if err != nil {
+		// handle error
+	}
 
-  conn, err := ln.Accept()
-  if err != nil {
-	  // handle error
-  }
+	conn, err := ln.Accept()
+	if err != nil {
+		// handle error
+	}
 
-  handshake, err := ws.Upgrade(conn)
-  if err != nil {
-	  // handle error
-  }
+	handshake, err := ws.Upgrade(conn)
+	if err != nil {
+		// handle error
+	}
 
 For customization details see `ws.Upgrader` documentation.
 
 After WebSocket handshake you can work with connection in multiple ways.
 That is, `ws` does not force the only one way of how to work with WebSocket:
 
-  header, err := ws.ReadHeader(conn)
-  if err != nil {
-	  // handle err
-  }
+	header, err := ws.ReadHeader(conn)
+	if err != nil {
+		// handle err
+	}
 
-  buf := make([]byte, header.Length)
-  _, err := io.ReadFull(conn, buf)
-  if err != nil {
-	  // handle err
-  }
+	buf := make([]byte, header.Length)
+	_, err := io.ReadFull(conn, buf)
+	if err != nil {
+		// handle err
+	}
 
-  resp := ws.NewBinaryFrame([]byte("hello, world!"))
-  if err := ws.WriteFrame(conn, frame); err != nil {
-      // handle err
-  }
+	resp := ws.NewBinaryFrame([]byte("hello, world!"))
+	if err := ws.WriteFrame(conn, frame); err != nil {
+	    // handle err
+	}
 
 As you can see, it stream friendly:
 
-  const N = 42
+	const N = 42
 
-  ws.WriteHeader(ws.Header{
-	  Fin:    true,
-	  Length: N,
-	  OpCode: ws.OpBinary,
-  })
+	ws.WriteHeader(ws.Header{
+		Fin:    true,
+		Length: N,
+		OpCode: ws.OpBinary,
+	})
 
-  io.CopyN(conn, rand.Reader, N)
+	io.CopyN(conn, rand.Reader, N)
 
 Or:
 
-  header, err := ws.ReadHeader(conn)
-  if err != nil {
-	  // handle err
-  }
+	header, err := ws.ReadHeader(conn)
+	if err != nil {
+		// handle err
+	}
 
-  io.CopyN(ioutil.Discard, conn, header.Length)
+	io.CopyN(ioutil.Discard, conn, header.Length)
 
 For more info see the documentation.
 */