chore(deps): update dependency mkdocs-material to v9.0.6

This MR contains the following updates:

Package	Update	Change
mkdocs-material	patch	==9.0.5 -> ==9.0.6

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Release Notes

squidfunk/mkdocs-material

v9.0.6

Compare Source

• Fixed #​4883: Automatically disable info plugin when serving
• Fixed #​4885: Search plugin crashes in some exotic cases (9.0.3 regression)

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