Revert "[relay] Update GO version and QUIC version (#4736)" (#5055)

This reverts commit 8722b79799.

relay/server/listener/quic/conn.go

@@ -12,14 +12,14 @@ import (
 )
 
 type Conn struct {
-	session   *quic.Conn
+	session   quic.Connection
 	closed    bool
 	closedMu  sync.Mutex
 	ctx       context.Context
 	ctxCancel context.CancelFunc
 }
 
-func NewConn(session *quic.Conn) *Conn {
+func NewConn(session quic.Connection) *Conn {
 	ctx, cancel := context.WithCancel(context.Background())
 	return &Conn{
 		session:   session,

relay/server/listener/ws/conn.go

@@ -88,7 +88,7 @@ func (c *Conn) Close() error {
 	c.closedMu.Lock()
 	c.closed = true
 	c.closedMu.Unlock()
-	return c.CloseNow()
+	return c.Conn.CloseNow()
 }
 
 func (c *Conn) isClosed() bool {