updated the C# demo #338

Job	Run time
🐧 Linux (x86_64, editor)	38s
🍏 MacOS (universal, editor)	1m 33s
🤖 Android (arm32, template_debug)	54s
🐧 Linux (x86_64, template_release)	59s
🕸 Web (wasm32, template_debug)	1m 29s
🍏 MacOS (universal, template_release)	1m 58s
🤖 Android (arm32, template_release)	44s
🕸 Web (wasm32, template_release)	1m 31s
🤖 Android (arm64, template_debug)	42s
🏁 Windows (x86_64, editor)	3m 16s
🤖 Android (arm64, template_release)	31s
🏁 Windows (x86_64, template_release)	3m 24s
🤖 Android (x86_32, template_debug)	51s
🤖 Android (x86_32, template_release)	42s
🤖 Android (x86_64, template_debug)	39s
🤖 Android (x86_64, template_release)	1m 0s
📦 Collect GDExtension binaries	21s
	21m 12s

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