build(deps-dev): update mkdocs-material requirement

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@9.6.14...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

@@ -45,7 +45,7 @@ docs = [
     "mkdocs-gen-files>=0.5.0",
     "mkdocs-literate-nav>=0.6.2",
     "mkdocs-macros-plugin>=1.3.7",
-    "mkdocs-material>=9.6.14",
+    "mkdocs-material>=9.7.6",
     "mkdocs-section-index>=0.3.10",
     "mkdocstrings-python>=1.16.12",
     "pymdown-extensions>=10.21.2",