chore(deps): update dependency typescript to v3.9.3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
typescript (source)	devDependencies	patch	3.9.2 -> 3.9.3

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Release Notes

Microsoft/TypeScript

v3.9.3

Compare Source

This release contains bug fixes in type-checking, APIs, emit, and editor scenarios.

For release notes, check out the release announcement.

For the complete list of fixed issues, check out the

• fixed issues query for Typescript v3.9.0 (Beta).
• fixed issues query for Typescript v3.9.1 (RC).
• fixed issues query for Typescript v3.9.2 (Final).
• fixed issues query for Typescript v3.9.3 (patch release).

Downloads are available on:

• npm

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[codecov]

Codecov Report

Merging #719 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #719   +/-   ##
=======================================
  Coverage   99.16%   99.16%           
=======================================
  Files           3        3           
  Lines         120      120           
  Branches       33       33           
=======================================
  Hits          119      119           
  Misses          1        1           

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