Update version to 1.4.9-0 #2279

Job	Run time
validateActor	1s
validateActor	1s
Build and deploy Desktop	7m 11s
Build and deploy Desktop	4m 38s
Build and deploy iOS	1h 47m 54s
Build and deploy iOS	1h 47m 54s
Build and deploy Android	22m 23s
Build and deploy Android	22m 23s
Build and deploy Web	8m 2s
Build and deploy Web	8m 2s
Create or update deploy checklist / createChecklist	6m 6s
Create or update deploy checklist / createChecklist	6m 6s
Post a GitHub comment when platforms are done building and deploying	3m 14s
Post a GitHub comment when platforms are done building and deploying	3m 15s
Post a Slack message when any platform fails to build or deploy	7s
Post a Slack message when any platform fails to build or deploy	8s
Post a Slack message when all platforms deploy successfully	0s
Post a Slack message when all platforms deploy successfully	0s
	5h 7m 25s

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