gdextension_build: Added testing of other versions of godot. #649

Job	Run time
🍏 Ios (universal, template_debug)	49s
🤖 Android (arm32)	39s
2️⃣ Double: ubuntu-20.04, Platform-linux	1m 20s
🍏 Ios (universal, template_release)	1m 1s
🤖 Android (arm64)	45s
2️⃣ Double: macos-latest, Platform-macos	1m 34s
🐧 Linux (x86_64, editor)	42s
2️⃣ Double: windows-latest, Platform-windows	4m 10s
🤖 Android (x86_32)	49s
🐧 Linux (x86_64, template_release)	1m 1s
🤖 Android (x86_64)	37s
🍏 MacOS (universal, editor)	1m 1s
🍏 MacOS (universal, template_release)	47s
🕸 Web (wasm32, template_debug)	1m 4s
🕸 Web (wasm32, template_release)	44s
🏁 Windows (x86_64, editor)	3m 5s
🏁 Windows (x86_64, template_release)	3m 27s
📦 Collect GDExtension binaries	14s
🧪 Testing API: ubuntu-20.04, Godot-stable_linux.x86_64.zip	11s
🧪 Testing API: macos-latest, Godot-stable_macos.universal.zip	1m 0s
🧪 Testing API: windows-latest, Godot-stable_win64.exe.zip	32s
	25m 32s

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