Update bindings (net9.0)

[jamescrosswell]

There are some hacks in our bindings script that we may be able to remove, if the fixes have made it into net9.0:

sentry-dotnet/scripts/generate-cocoa-bindings.ps1

Lines 158 to 159 in 4c903cf

	# Remove INSCopying due to https://github.com/xamarin/xamarin-macios/issues/17130
	$Text = $Text -replace ': INSCopying,', ':' -replace '\s?[:,] INSCopying', ''

sentry-dotnet/scripts/generate-cocoa-bindings.ps1

Lines 170 to 171 in 4c903cf

	# Adjust nullable return delegates (though broken until this is fixed: https://github.com/xamarin/xamarin-macios/issues/17109)
	$Text = $Text -replace 'delegate \w+ Sentry(BeforeBreadcrumb|BeforeSendEvent|TracesSampler)Callback', "[return: NullAllowed]`n$&"