chore: update dependency eslint-plugin-markdown to v5

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
eslint-plugin-markdown	3.0.1 → 5.1.0

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Release Notes

eslint/eslint-plugin-markdown (eslint-plugin-markdown)

v5.1.0

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Features

• add name to flat configs (#​256) (001d51e)

v5.0.0

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⚠ BREAKING CHANGES

• map known code block languages to respective file extensions (#​246)

Features

• map known code block languages to respective file extensions (#​246) (096cff4)

Bug Fixes

• check upper bounds of message line numbers for code blocks (#​247) (00adccb)

Chores

• run tests in Node.js 22, with ESLint 9 (#​250) (085e6d5)
• switch to eslint v9, eslint-config-eslint v10 (#​251) (a76cdf5)

v4.0.1

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Chores

• update changelog with note that v4.0.0 was not published to npm (#​241) (e80139d)

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