chore(version): bump version for v2 #1763

Job	Run time
test / test-dart-vm (3.3.0)	1m 28s
test / test-dart-vm (stable)	1m 40s
dart2js_test / test-dart-2js (3.3.0, chrome)	3m 59s
dart2js_test / test-dart-2js (3.3.0, firefox)	3m 58s
dart2js_test / test-dart-2js (stable, chrome)	3m 46s
dart2js_test / test-dart-2js (stable, firefox)	4m 5s
ddc_test / test-dart-ddc (3.3.0, chrome)	3m 13s
ddc_test / test-dart-ddc (3.3.0, firefox)	3m 27s
native_test / test-dart-native (macos-latest)	1m 18s
ddc_test / test-dart-ddc (stable, chrome)	3m 11s
native_test / test-dart-native (windows-latest)	3m 40s
ddc_test / test-dart-ddc (stable, firefox)	3m 17s
	37m 2s

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