chore: update to Go 1.26, resolve slog LogValuer values

go.mod

@@ -1,5 +1,5 @@
 module github.com/taigrr/log-socket/v2
 
-go 1.25.6
+go 1.26.0
 
 require github.com/gorilla/websocket v1.5.3

slog/handler.go

@@ -137,6 +137,7 @@ func (h *Handler) clone() *Handler {
 }
 
 func writeAttr(b *strings.Builder, groups []string, a slog.Attr) {
+	a.Value = a.Value.Resolve()
 	if a.Equal(slog.Attr{}) {
 		return
 	}