fix: wp eslint plugin dev dep

[nicholasio]

Related Issue/RFC: #

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• [ ] I have read the CONTRIBUTING document.
• [ ] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have added tests to cover my change.
• [ ] All new and existing tests passed.
• [ ] I have added a changeset to my PR. See CONTRIBUTING document for instructions

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Latest commit: 9634a91e512f83dd7197d3996373fe9b00a5091f

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