chore(uv): update mkdocs-material requirement from >=9.7.1 to >=9.7.6

Updates the requirements on [mkdocs-material](https://github.com/squidfunk/mkdocs-material) to permit the latest version.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@9.7.1...9.7.6)

---
updated-dependencies:
- dependency-name: mkdocs-material
  dependency-version: 9.7.6
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -24,7 +24,7 @@ dev = [
     "cookiecutter-data-science>=2.3.0",
     "ipykernel>=7.1.0",
     "jupyter>=1.1.1",
-    "mkdocs-material>=9.7.1",
+    "mkdocs-material>=9.7.6",
     "nox>=2025.11.12",
     "pre-commit>=4.5.1",
     "pytest>=9.0.2",