Bump typed-ast from 1.4.1 to 1.4.2 (#13)

Bumps [typed-ast](https://github.com/python/typed_ast) from 1.4.1 to 1.4.2.
- [Release notes](https://github.com/python/typed_ast/releases)
- [Changelog](https://github.com/python/typed_ast/blob/master/release_process.md)
- [Commits](python/typed_ast@1.4.1...1.4.2)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

requirements.txt

@@ -22,7 +22,7 @@ regex==2020.11.13
 requests==2.25.1
 starlette==0.13.6
 toml==0.10.2
-typed-ast==1.4.1
+typed-ast==1.4.2
 typing-extensions==3.7.4.3
 urllib3==1.26.2
 uvicorn==0.13.3