build(deps): bump remark-toc from 8.0.1 to 9.0.0

[dependabot[bot]]

Bumps remark-toc from 8.0.1 to 9.0.0.

Release notes

Sourced from remark-toc's releases.

9.0.0

Change

• e9f34ee Change to require Node.js 16 migrate: update too
• ffb64b2 Change to use exports migrate: don’t use private APIs
• 89fbc0b Update mdast-util-toc, @types/mdast, etc migrate: update too
• 6fbf704 Change to include Contents headings by default migrate: pass an options.heading if you don’t want it
• 64f5cd9 Change to default to tight: true migrate: pass options.tight: true if you don’t want it

Full Changelog: https://github.com/remarkjs/remark-toc/compare/8.0.1...9.0.0

Commits

• 9d0e276 9.0.0
• e9f34ee Change to require Node.js 16
• ffb64b2 Change to use exports
• 6fbf704 Change to include Contents headings by default
• 64f5cd9 Change to default to tight: true
• 7f04265 Refactor docs
• be36f14 Refactor code-style
• 89fbc0b Update mdast-util-toc, @types/mdast, etc
• 5459302 Refactor to move code to lib/
• 8ae5160 Refactor to use node:test
• Additional commits viewable in compare view

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