site: update requirements

use latest versions of all tools and plugins
diff --git a/requirements.txt b/requirements.txt
index ab8bb36..033e4fc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
-mkdocs==1.1.2
-sh==1.14.1
-Sphinx==3.5.4
-recommonmark==0.6.0
-breathe==4.28.0
-jinja2==3.0.3
+mkdocs==1.6.1
+sh==2.2.2
+Sphinx==8.2.3
+recommonmark==0.7.1
+breathe==4.36.0
+jinja2==3.1.6