chore: update dependency typescript to v4.3.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
typescript (source)	4.3.3 -> 4.3.4

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Release Notes

Microsoft/TypeScript

v4.3.4

Compare Source

This release

• adds an optional getCustomTransformers method to the SolutionBuilderHost* APIs
• uses the transforms given by getCustomTransformers in Builder Program instances when running emit() methods in cases where customTransforms are not given.

See the change for more details

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