Update dependency tslib to ^2.0.3

Created by: renovate[bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
tslib (source)	^2.0.1 -> ^2.0.3

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Release Notes

Microsoft/tslib

v2.0.3

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Full discussion in the webpack issue

v2.0.2

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This release adds support for using tslib in Node using esmodule imports, further context in #​126 and the related issues.

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