chore(deps): update dependency mkdocs-material to v9.6.16 (#2034)

This PR contains the following updates:

| Package | Change | Age | Confidence |
|---|---|---|---|
|
[mkdocs-material](https://redirect.github.com/squidfunk/mkdocs-material)
([changelog](https://squidfunk.github.io/mkdocs-material/changelog/)) |
`==9.6.15` -> `==9.6.16` |
[![age](https://developer.mend.io/api/mc/badges/age/pypi/mkdocs-material/9.6.16?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/mkdocs-material/9.6.15/9.6.16?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
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---

### Release Notes

<details>
<summary>squidfunk/mkdocs-material (mkdocs-material)</summary>

###
[`v9.6.16`](https://redirect.github.com/squidfunk/mkdocs-material/releases/tag/9.6.16):
mkdocs-material-9.6.16

[Compare
Source](https://redirect.github.com/squidfunk/mkdocs-material/compare/9.6.15...9.6.16)

- Fixed
[#&#8203;8349](https://redirect.github.com/squidfunk/mkdocs-material/issues/8349):
Info plugin doesn't correctly detect virtualenv in some cases
- Fixed
[#&#8203;8334](https://redirect.github.com/squidfunk/mkdocs-material/issues/8334):
Find-in-page detects matches in hidden search result list

</details>

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docs/requirements.txt

@@ -1,5 +1,5 @@
 mkdocs==1.6.1
-mkdocs-material==9.6.15
+mkdocs-material==9.6.16
 mkdocs-material-extensions==1.3.1
 mkdocs-video==1.5.0
 pymdown-extensions==10.16.1