Update dependency mkdocs-material to v9.6.21 (#330)

renovate[bot] · web-flow · commit 18d4f6d85bcd · 2025-09-30T13:18:12.000-07:00
Co-authored-by: renovate[bot] &lt;29139614+renovate[bot]@users.noreply.github.com&gt;
diff --git a/docs/requirements.txt b/docs/requirements.txt
@@ -1,4 +1,4 @@
 mkdocs==1.6.1
-mkdocs-material==9.6.17
+mkdocs-material==9.6.21
 mkdocs-markdownextradata-plugin==0.2.6
 mike==2.1.3
