error dependency on .net core 7, but its out of support

[ridingmower]

.net 7 is no longer supported

Error -

---

[gdlcf88]

      if (error) {
        dialog.showMessageBoxSync({type: "error", message: "Required .NET 7.0+ runtime is not installed."})
        app.quit()
        return
      }

It was a hardcoded error message. We are using .NET 8.0.