Update all Yarn dependencies (2020-07-02)

[depfu]

This is your daily update of all Yarn dependencies. Please take a good look at what changed and the test results before merging this pull request.

What changed?

✳️ @types/node (13.11.0 → 13.13.12, minor) · Repo

✳️ @typescript-eslint/eslint-plugin (2.26.0 → 2.34.0, minor) · Repo · Changelog · Release · Diff

✳️ @typescript-eslint/parser (2.26.0 → 2.34.0, minor) · Repo · Changelog · Release · Diff

✳️ typescript (3.8.3 → 3.9.5, minor) · Repo · Release · Diff

✳️ @types/ws (7.2.3 → 7.2.6, patch) · Repo

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