chore: update game bridge to 2.12.5 #995

Job	Run time
Test sample app 🛠️	2m 34s
Test Unity 6 sample app 🛠️	3m 53s
Build for StandaloneWindows64	3m 21s
Build for iOS	3m 48s
Build for WebGL	8m 4s
Build for Android	12m 44s
Build Unity 6 for StandaloneWindows64	5m 4s
Build Unity 6 for iOS	5m 39s
	45m 7s

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