Bump mkdocs-material from 9.6.19 to 9.6.20 (#266)

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 9.6.19 to 9.6.20.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@9.6.19...9.6.20)

---
updated-dependencies:
- dependency-name: mkdocs-material
  dependency-version: 9.6.20
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pyproject.toml

@@ -33,7 +33,7 @@ dev = [
     "pytest>=8.3.5",
     "types-requests==2.32.4.20250913",
     "mkdocstrings>=0.27",
-    "mkdocs-material==9.6.19",
+    "mkdocs-material==9.6.20",
     "mkdocs>=1.6.1",
     "requests-testing>=0.2.0",
     "pytest-asyncio>=0.26.0",