Update dependency eslint-plugin-prettier to v3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	References
eslint-plugin-prettier	devDependencies	major	2.6.2 -> 3.0.0	source

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Release Notes

prettier/eslint-plugin-prettier

v3.0.0

Compare Source

• Chore: Add eslint peer-dependency (d55d79c)
• Breaking: Extract showInvisibles and generateDifferences (bf7c40c)
• Breaking: Defining prettier options must use an object (478c7e5)
• Breaking: Drop support for ESLint v3 and v4 (2326231)
• Chore: Update dependencies (1ec94c8)
• Chore: remove two unused dependencies (bfe459c)
• Chore: Rename test files to keep them sequential (d38ea52)
• Breaking: Remove pragma support (3af422c)
• Breaking: Update minimum required pretter version to 1.13.0 (29c0506)
• Breaking: Drop support for node v4, v7 and v9 (be460bd)
• Chore: Add vscode config to autoformat on save (9fac6b4)
• Chore: Improve travis matrix (46d2444)
• Chore: Add format script to run prettier (d46aa6d)

v2.7.0

Compare Source

• Update: Support prettierignore and custom processors (#​111) (38537ba)
• Build: switch to release script package (047dc8f)

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[old-fusion-bot]

Found TODOs without GitHub issues:

probot-app-todos/package.json

Line 4 in b08253e

"description": "Ensures TODOs have corresponding open issues on GitHub",

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[KevinGrandon]

!merge