[UPDATE] 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](https://github.com/squidfunk/mkdocs-material/compare/9.7.5...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>

pyproject.toml

@@ -82,7 +82,7 @@ tests = [
 ]
 docs = [
     "mkdocs<2.0.0,>=1.6.1",
-    "mkdocs-material>=9.7.5,<10.0.0",
+    "mkdocs-material>=9.7.6,<10.0.0",
     "mkdocstrings>=1.0.3,<2.0.0",
     "mkdocstrings-python>=2.0.3,<3.0.0",
     "mkdocs-include-markdown-plugin>=7.2.1,<8.0.0",