Update dependency typescript to v3.8.3

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
typescript (source)	devDependencies	patch	3.8.2 -> 3.8.3

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Release Notes

Microsoft/TypeScript

### [`v3.8.3`](https://togithub.com/Microsoft/TypeScript/releases/v3.8.3) [Compare Source](https://togithub.com/Microsoft/TypeScript/compare/v3.8.2...v3.8.3) For release notes, check out the [release announcement](https://devblogs.microsoft.com/typescript/announcing-typescript-3-8/). For new features, check out the [What's new in TypeScript v3.8](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-8.html). For the complete list of fixed issues, check out the - [fixed issues query for Typescript v3.8.0 (Beta)](https://togithub.com/Microsoft/TypeScript/issues?utf8=%E2%9C%93&q=is%3Aissue+milestone%3A%22TypeScript+3.8.0%22+is%3Aclosed+). - [fixed issues query for Typescript v3.8.1 (RC)](https://togithub.com/Microsoft/TypeScript/issues?utf8=%E2%9C%93&q=is%3Aissue+milestone%3A%22TypeScript+3.8.1%22+is%3Aclosed+). - [fixed issues query for Typescript v3.8.2 (Final)](https://togithub.com/Microsoft/TypeScript/issues?utf8=%E2%9C%93&q=is%3Aissue+milestone%3A%22TypeScript+3.8.2%22+is%3Aclosed+). - [fixed issues query for Typescript v3.8.3](https://togithub.com/Microsoft/TypeScript/issues?utf8=%E2%9C%93&q=is%3Aissue+milestone%3A%22TypeScript+3.8.3%22+is%3Aclosed+). Downloads are available on: - [npm](https://www.npmjs.com/package/typescript)

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