chore(deps): update dependency mkdocs-material to ==9.6.* (#422)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

docs/requirements.txt

@@ -1,6 +1,6 @@
 mkdocs==1.6.*
 mkdocs-jupyter==0.25.*
-mkdocs-material==9.5.*
+mkdocs-material==9.6.*
 mkdocs-material-extensions==1.3.*
 mkdocs-git-revision-date-localized-plugin==1.3.*
 mkdocs-git-authors-plugin==0.9.*