Bump markdown-it-anchor from 5.2.5 to 8.1.0

[dependabot-preview]

Bumps markdown-it-anchor from 5.2.5 to 8.1.0.

Changelog

Sourced from markdown-it-anchor's changelog.

[8.1.0] - 2021-07-01

• Add token.meta.isPermalinkSymbol to help other plugins (e.g. TOC) to identify and ignore permalink symbols. (#99)

[8.0.5] - 2021-07-01

• Revert html_inline to html_block in legacy permalink. (#98)

[8.0.4] - 2021-06-25

• Fix level option TypeScript type. (#97)

[8.0.3] - 2021-06-20

• Update TypeScript types compatible with 8.0.0 release. (#95)

[8.0.2] - 2021-06-19

• Fix bug with linkAfterHeader permalink renderer. (#93)
• Also fix regression where symbol wasn't allowed to be HTML anymore in new renderers.

[8.0.1] - 2021-06-15

• Fix permalink option typo in readme. (#91)

[8.0.0] - 2021-06-14

• Set tabindex="-1" on headers. (#85, #86)
• Include and document accessible permalink options. (#82, #89)

[7.1.0] - 2021-03-06

• Update TypeScript types. (#83)

[7.0.2] - 2021-02-06

• Optimize token parsing. (#80)

[7.0.1] - 2021-01-28

• Add a Chinese readme. (#79)

[7.0.0] - 2021-01-04

• Depend on any markdown-it version. (#76)

[6.0.1] - 2020-11-19

• Added example.html test case.
• Added uniqueSlugStartIndex test case.
• Fix equal -> strictEqual.
• Updated dependencies -> found 0 vulnerabilities.

[6.0.0] - 2020-09-29

• Allow to configure unique slug start index, and make it 1 instead of 2 to mimic what markdown-toc, github-slugger, and GitHub itself does by default. This should improve out of the box compatibility with other packages. (#74)

[5.3.0] - 2020-05-12

... (truncated)

Commits

• 1f44060 8.1.0
• 74bcc8e Update changelog
• d6b377c Merge pull request #99 from valeriangalliat/feature/permalink-symbol-meta
• 2f57abe Support permalink symbol token meta (#98)
• d377fc5 8.0.5
• 1d02a38 Revert html_inline to html_block in legacy permalink (fixes #98)
• f5c0844 8.0.4
• 8fbd864 Update changelog
• ffc82df Merge pull request #97 from meteorlxy/patch-1
• 8c4bcc5 fix: fix types of level option
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #51.