Properly sign and notarize macOS build

### Godot version

4.2.stable

### System information

macOS 14.2, M1

### Issue description

This software is ineligible for submission to [Homebrew](https://brew.sh) (a popular package manager for macOS) as a cask because it is not properly signed and notarized.

### Steps to reproduce

See https://github.com/Homebrew/homebrew-cask/pull/162337.

### Minimal reproduction project

N/A

The issue does not name any repository files, tests, or build entry points; start by inspecting how the macOS build is produced and distributed, then review the linked Homebrew cask pull request. Done means the macOS artifact is properly signed and notarized and is eligible for Homebrew submission.

Written by the indexing model from the issue text.