use a netip.Addr instead of a net.IP in the packetInfo struct

sys_conn_no_oob.go

@@ -2,7 +2,10 @@
 
 package quic
 
-import "net"
+import (
+	"net"
+	"net/netip"
+)
 
 func newConn(c net.PacketConn, supportsDF bool) (*basicConn, error) {
 	return &basicConn{PacketConn: c, supportsDF: supportsDF}, nil
@@ -12,7 +15,7 @@ func inspectReadBuffer(any) (int, error)  { return 0, nil }
 func inspectWriteBuffer(any) (int, error) { return 0, nil }
 
 type packetInfo struct {
-	addr net.IP
+	addr netip.Addr
 }
 
 func (i *packetInfo) OOB() []byte { return nil }