Apple notarization altool command will be discontinued Fall 2023

[Tom Goddard]

A command that the ChimeraX Mac notarization script uses to notarize the app is deprecated and will no longer be available in Fall 2023.
We will need to find out the new way of doing notarization and use it.

	<key>warnings</key>
	<array>
		<dict>
			<key>code</key>
			<integer>-1030</integer>
			<key>message</key>
			<string>altool has been deprecated and, starting in fall 2023, will no longer be supported by the Apple notary service. You should start using notarytool to notarize your software.</string>
			<key>userInfo</key>
			<dict>
				<key>NSLocalizedDescription</key>
				<string>altool has been deprecated and, starting in fall 2023, will no longer be supported by the Apple notary service. You should start using notarytool to notarize your software.</string>
			</dict>
		</dict>
	</array>