Update eslint-config-prettier to 4.0.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	References
eslint-config-prettier	devDependencies	major	3.6.0 -> 4.0.0	source

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Release Notes

prettier/eslint-config-prettier

v4.0.0

Compare Source

• Breaking change: Support for [eslint-plugin-typescript] has been removed and
  replaced with support for its successor [@​typescript-eslint/eslint-plugin].
  Thanks to TANIGUCHI Masaya (@​ta2gch) and everyone else who helped with this!
• Changed: [arrow-body-style] and [prefer-arrow-callback] are now marked as
  [special rules][arrow-special], since they might cause problems if using
  [eslint-plugin-prettier] and --fix. They are turned off by default, and the
  CLI helper tool will warn about them (but not error if you do enable them).
  This won’t break your linting checks, but do note that these rules will be
  disabled unless you explicitly enable them again, and that you might see new
  warnings when running the CLI helper tool.

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