Merge pull request freqtrade#12330 from freqtrade/dependabot/pip/develop/mkdocs-d51531eb39

chore(deps): bump mkdocs-material from 9.6.20 to 9.6.21 in the mkdocs group

Author: xmatthias

docs/requirements-docs.txt

@@ -1,6 +1,6 @@
 markdown==3.9
 mkdocs==1.6.1
-mkdocs-material==9.6.20
+mkdocs-material==9.6.21
 mdx_truly_sane_lists==1.3
 pymdown-extensions==10.16.1
 jinja2==3.1.6