chore(deps): update dependency typedoc to v0.26.9

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
typedoc (source)	0.26.8 -> 0.26.9

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Release Notes

TypeStrong/TypeDoc (typedoc)

v0.26.9

Compare Source

Features

• Added headings option to control optional headings, #​2729.
• Updated Chinese translations, #​2739.
• Added a folder icon to page navigation elements which are not links, #​2741.

Bug Fixes

• externalSymbolLinkMappings now uses the TypeScript reported link target if available, #​2725.
• TypeDoc will no longer omit the modules page if a project contains only modules/documents, #​2730.
• Fixed missing breadcrumbs on project page, #​2728.
• TypeDoc will no longer render an empty readme page if no readme was found.

Thanks!

• @​lriggle-strib
• @​mrfigg
• @​XeroAlpha

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