chore(deps): update dependency mkdocs-section-index to v0.3.6

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
mkdocs-section-index (changelog)	==0.3.5 -> ==0.3.6

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Release Notes

oprypin/mkdocs-section-index (mkdocs-section-index)

### [`v0.3.6`](https://togithub.com/oprypin/mkdocs-section-index/releases/tag/v0.3.6) [Compare Source](https://togithub.com/oprypin/mkdocs-section-index/compare/v0.3.5...v0.3.6) - Adapt to mkdocs-material version 9.2 - [`46dd8e7`](https://togithub.com/oprypin/mkdocs-section-index/commit/46dd8e72d5abcf2bb10b306556ddd31c5ec04172), [#​18](https://togithub.com/oprypin/mkdocs-section-index/issues/18)

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