Update dependency eslint-plugin-prettier to v3.4.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
eslint-plugin-prettier	3.3.1 -> 3.4.0

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Release Notes

prettier/eslint-plugin-prettier

### [`v3.4.0`](https://togithub.com/prettier/eslint-plugin-prettier/blob/master/CHANGELOG.md#v340-2021-04-15) [Compare Source](https://togithub.com/prettier/eslint-plugin-prettier/compare/v3.3.1...0813a83512ab52194b4e8da7193daf880a8cbef5) - feat: support processor virtual filename ([#​401](git@github.com:prettier/eslint-plugin-prettier/issues/401)) ([ee0ccc6](git@github.com:prettier/eslint-plugin-prettier/commit/ee0ccc6ac06d13cd546e78b444e53164f59eb27f)) - Simplify report logic ([#​380](git@github.com:prettier/eslint-plugin-prettier/issues/380)) ([d993f24](git@github.com:prettier/eslint-plugin-prettier/commit/d993f247b5661683af031ab3b93955a0dfe448fa)) - Update: README.md ([#​375](git@github.com:prettier/eslint-plugin-prettier/issues/375)) ([3ea4242](git@github.com:prettier/eslint-plugin-prettier/commit/3ea4242a8d4acdb76eb7e7dca9e44d3e87db70e3))

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