refactor: replace experimental.fingerprints with custom-certificates and Change the fingerprint verification logic to SSL pinning

dns/client.go

@@ -78,7 +78,7 @@ func (c *client) ExchangeContext(ctx context.Context, m *D.Msg) (*D.Msg, error)
 	ch := make(chan result, 1)
 	go func() {
 		if strings.HasSuffix(c.Client.Net, "tls") {
-			conn = tls.Client(conn, tlsC.GetGlobalFingerprintTLSConfig(c.Client.TLSConfig))
+			conn = tls.Client(conn, tlsC.GetGlobalTLSConfig(c.Client.TLSConfig))
 		}
 
 		msg, _, err := c.Client.ExchangeWithConn(m, &D.Conn{

dns/doh.go

@@ -374,7 +374,7 @@ func (doh *dnsOverHTTPS) createClient(ctx context.Context) (*http.Client, error)
 // HTTP3 is enabled in the upstream options).  If this attempt is successful,
 // it returns an HTTP3 transport, otherwise it returns the H1/H2 transport.
 func (doh *dnsOverHTTPS) createTransport(ctx context.Context) (t http.RoundTripper, err error) {
-	tlsConfig := tlsC.GetGlobalFingerprintTLSConfig(
+	tlsConfig := tlsC.GetGlobalTLSConfig(
 		&tls.Config{
 			InsecureSkipVerify:     false,
 			MinVersion:             tls.VersionTLS12,

dns/doq.go

@@ -298,7 +298,7 @@ func (doq *dnsOverQUIC) openStream(ctx context.Context, conn quic.Connection) (q
 
 // openConnection opens a new QUIC connection.
 func (doq *dnsOverQUIC) openConnection(ctx context.Context) (conn quic.Connection, err error) {
-	tlsConfig := tlsC.GetGlobalFingerprintTLSConfig(
+	tlsConfig := tlsC.GetGlobalTLSConfig(
 		&tls.Config{
 			InsecureSkipVerify: false,
 			NextProtos: []string{