chore(deps): update dependency @eslint/markdown to v7

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@eslint/markdown	^6.3.0 -> ^7.0.0

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Release Notes

eslint/markdown (@​eslint/markdown)

v7.2.0

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Features

• add allowedIgnoreCase option to no-html (#​500) (06ac53d)
• add checkClosedHeadings option to no-missing-atx-heading-space (#​452) (a9675aa)
• add frontmatterTitle option to heading-increment (#​454) (614ef3e)
• add no-space-in-emphasis rule (#​403) (e4b8de4)
• Expose identifiers in messages for no-duplicate-definitions (#​506) (9f54c1b)
• expose identifiers in messages for no-empty-definitions (#​507) (738f366)
• verify identifier data in no-empty-definitions (#​499) (738f366)

Bug Fixes

• allow any type for meta.docs.recommended in custom rules (#​502) (604a4b9)
• detect errors after comments in no-multiple-h1 and require-alt-text (#​468) (c9de444)
• false negatives and positives in no-reversed-media-syntax (#​473) (c7a4d64)
• fenced-code-language highlights only relevant parts (#​487) (bb48ae2)
• handle multiline setext headings in no-duplicate-headings (#​469) (99beea6)
• improve HTML id/name regex for unquoted values and spaces (#​480) (6c35261)
• improve no-html rule's tag location reporting (#​491) (5e6e94e)
• make meta property optional in Block type (#​461) (15c93a6)
• normalize definition identifiers in no-*-definitions rules (#​488) (b248383)

v7.1.0

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Features

• add checkMissingCells option to table-column-count (#​434) (bf3f39b)

Bug Fixes

• bump plugin-kit to latest to resolve security vulnerabilities (#​485) (c5398ca)
• case-insensitive attribute checks in no-missing-link-fragment (#​465) (094a59d)
• case-insensitive checks for HTML attributes in no-missing-link-fragment (094a59d)
• no-reversed-media-syntax add missing offset for code spans (#​460) (af7736c)
• potential super-linear regular expressions (#​463) (bc82567)
• remove unused types from types.ts (#​462) (466f80e)

v7.0.0

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⚠ BREAKING CHANGES

• move certain types to import them from @eslint/markdown/types (#​446)
• set no-missing-link-fragments default ignoreCase to true (#​447)
• remove rollup and extraneous types (#​383)

Features

• add allowDefinitions & allowFootnoteDefinitions opts to no-empty-definitions (#​455) (e09eba6)
• add checkFootnoteDefinitions option to no-empty-definitions (#​442) (4d504e5)
• create no-unused-definitions rule (#​425) (6b43333)
• set no-missing-link-fragments default ignoreCase to true (#​447) (925191e)

Bug Fixes

• handle URL-encoded link fragments in no-missing-link-fragments rule (#​437) (76685c5)
• move certain types to import them from @eslint/markdown/types (#​446) (0dc6220)
• remove rollup and extraneous types (#​383) (e7ccd2e)
• skip HTML nodes in heading slugs for no-missing-link-fragments (#​445) (e4dcf6a)
• update no-duplicate-headings to align with CommonMark spec (#​438) (2bc0a38)

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