Merge remote-tracking branch 'upstream/master' #3

Job	Run time
Build Android example app (stable channel)	4m 25s
Build iOS example app (3.13)	5m 49s
Build Android example app (3.13)	3m 54s
Run Dart Analyzer	1m 13s
Build iOS example app (stable channel)	3m 7s
Build Linux example app (stable channel)	1m 47s
Build Linux example app (3.13)	2m 0s
Build macOS example app (3.13)	4m 14s
Build macOS example app (stable channel)	3m 48s
Run integration tests (Android)	5m 48s
Run integration tests (iOS)	8m 24s
java_format	10s
objc_format	10s
swift_format	18s
Run all unit tests (Android)	4m 25s
Run all unit tests (Dart)	1m 46s
	51m 18s

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