chore(deps): update dependency mkdocs-material to v9.7.6 (#2265)

This PR contains the following updates:

| Package | Change |
[Age](https://docs.renovatebot.com/merge-confidence/) |
[Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|
|
[mkdocs-material](https://redirect.github.com/squidfunk/mkdocs-material)
([changelog](https://squidfunk.github.io/mkdocs-material/changelog/)) |
`==9.7.5` → `==9.7.6` |
![age](https://developer.mend.io/api/mc/badges/age/pypi/mkdocs-material/9.7.6?slim=true)
|
![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/mkdocs-material/9.7.5/9.7.6?slim=true)
|

---

> [!WARNING]
> Some dependencies could not be looked up. Check the [Dependency
Dashboard](../issues/355) for more information.

---

### Release Notes

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

###
[`v9.7.6`](https://redirect.github.com/squidfunk/mkdocs-material/releases/tag/9.7.6):
mkdocs-material-9.7.6

[Compare
Source](https://redirect.github.com/squidfunk/mkdocs-material/compare/9.7.5...9.7.6)

> \[!WARNING]
>
> **Material for MkDocs is in maintenance mode**
>
> Going forward, the Material for MkDocs team focuses on [Zensical], a
next-gen static site generator built from first principles. We will
provide critical bug fixes and security updates for Material for MkDocs
until November 2026.
>
> [Read the full announcement on our blog]

[Zensical]: https://zensical.org

[Read the full announcement on our blog]:
https://squidfunk.github.io/mkdocs-material/blog/2025/11/05/zensical/

#### Changes

- Automatically disable MkDocs 2.0 warning for forks of MkDocs

</details>

---

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---

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docs/requirements.txt

@@ -1,5 +1,5 @@
 mkdocs==1.6.1
-mkdocs-material==9.7.5
+mkdocs-material==9.7.6
 mkdocs-material-extensions==1.3.1
 mkdocs-video==1.5.0
 pymdown-extensions==10.21