Update dependency typedoc to v0.18.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
typedoc (source)	devDependencies	minor	0.17.8 -> 0.18.0

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Release Notes

TypeStrong/TypeDoc

### [`v0.18.0`](https://togithub.com/TypeStrong/TypeDoc/compare/0.17.8...5b3e56b1c1c3382392e1b76aabf664b10bfbd462) [Compare Source](https://togithub.com/TypeStrong/TypeDoc/compare/0.17.8...5b3e56b1c1c3382392e1b76aabf664b10bfbd462)

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