Bump mkdocs-material from 8.5.11 to 9.1.2 (#1611)

dependabot[bot] · web-flow · commit a9bb7d9618f7 · 2023-03-13T09:43:03.000+01:00
diff --git a/requirements/requirements_doc.txt b/requirements/requirements_doc.txt
@@ -1,2 +1,2 @@
 mkdocs==1.4.2
-mkdocs-material==8.5.11
+mkdocs-material==9.1.2
