fixed one colon in the tsconfig.json being not removed #1224

Job	Run time
data-test (3.10)	26s
data-test (3.11)	36s
data-test (3.12)	31s
data-build / build	3m 9s
data-deployment-1 / Restart the deployment	7s
data-deployment-2 / Restart the deployment	9s
	4m 58s

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