chore: style fixes from go fix (#10846)

Just `go fix ./...`

Signed-off-by: Jakob Borg <jakob@kastelo.net>

lib/relay/client/static.go

@@ -69,7 +69,7 @@ func (c *staticClient) serve(ctx context.Context) error {
 
 	slog.InfoContext(ctx, "Joined relay", slogutil.URI(fmt.Sprintf("%s://%s", c.uri.Scheme, c.uri.Host)))
 
-	messages := make(chan interface{})
+	messages := make(chan any)
 	errorsc := make(chan error, 1)
 
 	go messageReader(ctx, c.conn, messages, errorsc)
@@ -235,7 +235,7 @@ func performHandshakeAndValidation(conn *tls.Conn, uri *url.URL) error {
 	return nil
 }
 
-func messageReader(ctx context.Context, conn net.Conn, messages chan<- interface{}, errors chan<- error) {
+func messageReader(ctx context.Context, conn net.Conn, messages chan<- any, errors chan<- error) {
 	for {
 		msg, err := protocol.ReadMessage(conn)
 		if err != nil {