fix(deps): update dependency @typescript-eslint/eslint-plugin to v2.21.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
@typescript-eslint/eslint-plugin	dependencies	minor	2.20.0 -> 2.21.0

---

Release Notes

typescript-eslint/typescript-eslint

v2.21.0

Compare Source

Bug Fixes

• eslint-plugin: [embt] ignore JSX callbacks (#​1630) (4d45b33)
• eslint-plugin: [no-floating-promises] handle finally callback (#​1620) (1aa7135)
• eslint-plugin: [typedef] allow array/object destructuring in for/of (#​1570) (660bace)
• typescript-estree: process.stdout can be undefined (#​1619) (0d8e87e)

Features

• eslint-plugin: [require-await] add --fix support (#​1561) (9edd863)

---

Renovate configuration

📅 Schedule: "before 3am on Monday" (UTC).

🚦 Automerge: Enabled.

♻️ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by WhiteSource Renovate. View repository job log here.