⬆️ Update mkdocs-material to v9.1.19

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
mkdocs-material	==9.1.18 -> ==9.1.19

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Release Notes

squidfunk/mkdocs-material (mkdocs-material)

### [`v9.1.19`](https://togithub.com/squidfunk/mkdocs-material/releases/tag/9.1.19): mkdocs-material-9.1.19 [Compare Source](https://togithub.com/squidfunk/mkdocs-material/compare/9.1.18...9.1.19) - Added support for MkDocs 1.5+ - Fixed [#​5699](https://togithub.com/squidfunk/mkdocs-material/issues/5699): Improve error reporting in social plugin

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Configuration

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