Update dependency tsc-watch to ^4.1.0

Created by: renovate[bot]

This PR contains the following updates:

Package	Type	Update	New value	References	Sourcegraph
tsc-watch	devDependencies	minor	^4.1.0	source

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Release Notes

gilamran/tsc-watch

v4.1.0

Compare Source

v4.1.0 - 22/1/2020

Added the onCompilationComplete option - (Thanks to @​ackvf for the idea)

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Renovate configuration

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