Build

Merge pull request #57 from GetStream/fix/fix-concurency-issues #150

Job	Run time
Build for Flutter Linux	2m 28s
Build for Flutter Embedded Linux	3m 21s
Dart Format Check	1m 37s
Build for Flutter Android	11m 29s
Build for flutter macOS	8m 55s
Build for flutter Windows	4m 7s
Build for Flutter iOS	3m 36s
Build for Flutter Web	1m 50s
	37m 23s

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