chore(deps): update dependency markdown-it-anchor to v8

This MR contains the following updates:

Package	Type	Update	Change
markdown-it-anchor	devDependencies	major	^5.0.2 -> ^8.0.0

MR created with the help of gitlab-org/frontend/renovate-gitlab-bot

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Release Notes

valeriangalliat/markdown-it-anchor

v8.3.1

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v8.3.0

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v8.2.0

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v8.1.3

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v8.1.2

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v8.1.1

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v8.1.0

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v8.0.5

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v8.0.4

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v8.0.3

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v8.0.2

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v8.0.1

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v8.0.0

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v7.1.0

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v7.0.2

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v7.0.1

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v7.0.0

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v6.0.1

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v6.0.0

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Configuration

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