Updates SDK tsconfig to enable the `incremental` #1163

Job	Run time
Cancel redundant actions already in progress	6s
Build Wasp (ubuntu-20.04, latest, 8.10.7, 3.6.2.0)	8m 13s
Build Wasp (macos-latest, latest, 8.10.7, 3.6.2.0)	11m 41s
Build Wasp (windows-latest, latest, 8.10.7, 3.6.2.0)	6m 31s
Build Wasp (ubuntu-20.04, 18, 8.10.7, 3.6.2.0)	8m 10s
Build Wasp (ubuntu-20.04, 20, 8.10.7, 3.6.2.0)	8m 4s
	42m 45s

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