Update dependency typedoc-plugin-markdown to v4.2.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
typedoc-plugin-markdown (source)	4.1.2 -> 4.2.1

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Release Notes

typedoc2md/typedoc-plugin-markdown (typedoc-plugin-markdown)

### [`v4.2.1`](https://togithub.com/typedoc2md/typedoc-plugin-markdown/blob/HEAD/packages/typedoc-plugin-markdown/CHANGELOG.md#421-2024-07-11) [Compare Source](https://togithub.com/typedoc2md/typedoc-plugin-markdown/compare/typedoc-plugin-markdown@4.2.0...typedoc-plugin-markdown@4.2.1) ##### Patch Changes - Fix missing index descriptions for signatures ([#​618](https://togithub.com/typedoc2md/typedoc-plugin-markdown/issues/618)) ### [`v4.2.0`](https://togithub.com/typedoc2md/typedoc-plugin-markdown/blob/HEAD/packages/typedoc-plugin-markdown/CHANGELOG.md#420-2024-07-10) [Compare Source](https://togithub.com/typedoc2md/typedoc-plugin-markdown/compare/typedoc-plugin-markdown@4.1.2...typedoc-plugin-markdown@4.2.0) ##### Minor Changes - Exposed "modulesFileName" option ([#​647](https://togithub.com/typedoc2md/typedoc-plugin-markdown/issues/647)) - Write `.nojekyll` file if TypeDocs "githubPages" option is true ([#​650](https://togithub.com/typedoc2md/typedoc-plugin-markdown/issues/650)) - Exposed "blockTagsPreserveOrder" option to configure ordering of comment block tags ([#​627](https://togithub.com/typedoc2md/typedoc-plugin-markdown/issues/627)). - Exposed "useHTMLEncodedBrackets" option for alternative angle bracket escaping([#​564](https://togithub.com/typedoc2md/typedoc-plugin-markdown/issues/564)).

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