Bump mkdocs-material from 9.5.40 to 9.5.42 in /docs in the docs group

Bumps the docs group in /docs with 1 update: [mkdocs-material](https://github.com/squidfunk/mkdocs-material).


Updates `mkdocs-material` from 9.5.40 to 9.5.42
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@9.5.40...9.5.42)

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

Signed-off-by: dependabot[bot] <[email protected]>

docs/requirements.txt

@@ -1,7 +1,7 @@
 mkdocs-callouts>=1.13.2
 mkdocs-git-authors-plugin>=0.8.0
 mkdocs-git-revision-date-localized-plugin>=1.2.5
-mkdocs-material==9.5.40
+mkdocs-material==9.5.42
 mkdocs-table-reader-plugin>=2.1.0
 mkdocs==1.6.1
 pandas>=2.0.3